Joinder Agreement (England & Wales)
Date: [Joinder Date]
This Joinder Agreement (this "Agreement") is entered into on [Joinder Date] by:
(1) [Joining Party Name], [Joining Party Entity Type], of [Joining Party Address], [Joining Party City], [Joining Party County], [Joining Party Postcode], England and Wales (the "Joining Party"); and
(2) The existing parties to the Original Agreement described below (collectively, the "Continuing Parties"), as represented by [Continuing Parties Representative].
The Joining Party and the Continuing Parties are referred to individually as a "Party" and collectively as the "Parties".
RECITALS
A. On [Original Agreement Date], the Continuing Parties entered into the [Original Agreement Title] (the "Original Agreement"). [Original Agreement Description]
B. The Parties wish to add the Joining Party as a party to the Original Agreement with effect from the date of this Agreement (or such other date as specified herein), on the terms set out in this Joinder Agreement.
C. The Continuing Parties are: [Existing Parties].
OPERATIVE PROVISIONS
1. DEFINITIONS AND INTERPRETATION
1.1 In this Joinder Agreement, capitalised terms not otherwise defined herein shall have the meanings given to them in the Original Agreement.
1.2 References to the Original Agreement, unless the context otherwise requires, include all schedules, exhibits, and amendments to the Original Agreement as at the date of this Joinder Agreement.
1.3 This Joinder Agreement shall be read together with the Original Agreement and construed consistently with it.
2. CONSIDERATION
In consideration of [Consideration Type] in the amount of £[Consideration Amount] (where applicable), the Joining Party agrees to execute this Joinder Agreement and to comply with the obligations set out herein and in the Original Agreement.
3. JOINDER TO ORIGINAL AGREEMENT
3.1 The Joining Party hereby joins the Original Agreement as a party thereto in the capacity of [Joining Party Role] and, with effect from the Effective Date (as defined below), agrees to be bound by [Joiner Scope] of the Original Agreement applicable to a [Joining Party Role] as if the Joining Party had been an original party to the Original Agreement and had executed the Original Agreement on the date it was first entered into.
4. EFFECTIVE DATE
5. ROLE OF JOINING PARTY
5.1 The Joining Party joins the Original Agreement as a [Joining Party Role]. [Role Description]
5.2 With effect from the Effective Date, all references in the Original Agreement to parties of the class or category of [Joining Party Role] shall, unless the context otherwise requires, be construed to include the Joining Party.
6. COURT PROCEEDINGS
The Parties acknowledge that where a dispute arises under the Original Agreement (as amended by this Joinder Agreement), any party may apply to the courts of England and Wales to join additional parties to proceedings in accordance with Part 19 of the Civil Procedure Rules 1998 (CPR Part 19). This clause does not limit or modify any dispute resolution provisions in the Original Agreement.
7. ORIGINAL AGREEMENT TO REMAIN IN FORCE
Save as expressly amended or modified by this Joinder Agreement, the Original Agreement shall continue in full force and effect and shall be binding on all Parties (including the Joining Party with effect from the Effective Date) in accordance with its terms. In the event of any conflict between the terms of this Joinder Agreement and the terms of the Original Agreement, this Joinder Agreement shall prevail to the extent of the inconsistency.
8. FURTHER ASSURANCE
Each Party shall, at the reasonable request and cost of the requesting Party, execute and deliver all such further documents, instruments, and deeds, and do all such acts and things, as may be reasonably required to give full effect to this Joinder Agreement and the Original Agreement (as amended).
9. THIRD PARTY RIGHTS
Save as provided in the Original Agreement, this Joinder Agreement does not confer any right on any third party to enforce any of its terms under the Contracts (Rights of Third Parties) Act 1999. The Parties may rescind or vary this Joinder Agreement without the consent of any third party.
10. COUNTERPARTS
This Joinder Agreement may be executed in any number of counterparts, each of which when executed and delivered shall constitute an original, but all of which together shall constitute one and the same Agreement. Transmission of an executed signature page by electronic means (including PDF by email) shall constitute effective delivery of such counterpart.
11. GOVERNING LAW AND JURISDICTION
This Joinder Agreement (and any dispute or claim arising out of or in connection with it, whether contractual or non-contractual) shall be governed by and construed in accordance with the laws of England and Wales. The Parties irrevocably submit to the exclusive jurisdiction of the courts of England and Wales.
IN WITNESS WHEREOF, this Joinder Agreement has been executed on the date first written above.
JOINING PARTY
Name: [Joining Party Name]
Address: [Joining Party Address], [Joining Party City], [Joining Party Postcode]
Role: [Joining Party Role]
Signature: ____________________________
Date: ____________________________
CONTINUING PARTIES
Executed on behalf of the Continuing Parties by: [Continuing Parties Representative]
Signature: ____________________________
Date: ____________________________
Joining Party
________________
Signature
Date: ________________
Continuing Parties (Authorised Signatory)
________________
Signature
Date: ________________
What Is a Joinder Agreement (England & Wales)?
A Joinder Agreement in the United Kingdom governs the relationship between shareholders and the company and the terms on which equity is held, issued, or transferred, and is shaped by the Companies Act 2006.
Joinder Agreements are a practical and widely-used mechanism in English commercial practice. They arise most commonly in the context of shareholders' agreements — where a new investor, employee shareholder, or incoming shareholder needs to be added — partnership agreements and LLP membership agreements, joint venture agreements where a new participant is joining the venture, syndicated loan or facility agreements where a new lender or borrower joins, multi-party licensing agreements, consortium agreements, and construction contracts where a new sub-contractor or consultant is joining an existing framework.
Under English contract law, a new party cannot be unilaterally added to an existing contract without the consent of all existing parties; a contract creates rights and obligations only between its parties. A Joinder Agreement therefore requires the execution of all parties — the Joining Party (who is bound by it) and the Continuing Parties (who consent to the joinder). Consideration must be present for the Joinder Agreement to be binding as a simple contract; if consideration is absent, the agreement should be executed as a deed.
The Contracts (Rights of Third Parties) Act 1999 would, in theory, allow a third party who was not a signatory to enforce a contract term that conferred a benefit on them — but a Joinder Agreement is the preferred mechanism for formally incorporating a new party with full contractual rights and obligations, rather than relying on the third-party rights Act.
The legal framework governing the Joinder Agreement (England & Wales) in United Kingdom draws on several key statutes and regulatory bodies. Under the Companies Act 2006, Companies House maintains the register of UK companies. Section 386 of the Companies Act 2006 sets accounting record obligations. The Competition and Markets Authority (CMA) enforces the Consumer Rights Act 2015. The Financial Conduct Authority (FCA) regulates financial services under the Financial Services and Markets Act 2000. The High Court of Justice has jurisdiction under the Senior Courts Act 1981. Parties executing a Joinder Agreement (England & Wales) in United Kingdom should confirm the document reflects current law, including any amendments enacted since the original drafting date. The Companies Act 2006 sets the foundational requirements.
When Do You Need a Joinder Agreement (England & Wales)?
A Joinder Agreement is needed whenever a new party is to join an existing multi-party contract in England and Wales and it is more practical to supplement the original agreement than to redraft and re-execute it.
In the context of shareholders' agreements, a Joinder Agreement is needed every time a new shareholder acquires shares in the relevant company — whether through a new share issue, a secondary share transfer, the exercise of share options, or the conversion of loan notes. Most well-drafted shareholders' agreements contain an obligation requiring any transferee of shares to execute a deed of adherence (joinder) before completing the share transfer, confirming that all shareholders are bound by the shareholders' agreement at all times.
In partnership and LLP contexts, a Joinder Agreement is needed when a new partner is admitted to a partnership or a new member joins an LLP. The incoming partner or member accedes to the existing partnership agreement or LLP agreement and assumes all applicable rights and obligations from the date of joinder.
In joint venture agreements, a Joinder Agreement is needed where a new participant is being introduced to the venture after the original joint venture agreement was signed — for example, a new investor or a strategic partner joining a property development joint venture.
In finance transactions, Joinder Agreements are used in syndicated lending to add new lenders or borrowers to a facility agreement that has already been executed. The standard form Joinder or 'Transfer Certificate' under the Loan Market Association (LMA) standard documentation is a form of joinder agreement.
A Joinder Agreement may also include amendments to the original contract where the addition of a new party requires certain provisions to be updated, such as altering voting thresholds, adjusting profit-sharing ratios, or updating defined terms to reflect the new party's role.
What to Include in Your Joinder Agreement (England & Wales)
A well-drafted Joinder Agreement for England and Wales should contain the following key provisions.
Identification of the parties clearly sets out who the Joining Party is and who the Continuing Parties are. The Joining Party's full legal name, entity type, and address must be stated. The original agreement must be identified by its title and date, and the existing parties should be listed.
The recitals provide context for the joinder, setting out the background to the original agreement and the reasons for the joinder.
The joinder clause is the operative provision: it states that the Joining Party accedes to the original agreement in a specified capacity and agrees to be bound by all (or specified) terms as though they were an original party. The clause should specify the Joining Party's role and whether they are joining all provisions of the original agreement or only specified clauses.
The effective date specifies when the joinder takes effect. This may be the date of the Joinder Agreement itself or a future date — for example, completion of a share transfer, satisfaction of a condition precedent, or the date of formal admission as a partner.
The consideration provision records what the Joining Party is giving in exchange for the benefits of the original agreement. Adequate consideration is required for the joinder to be binding as a simple contract under English law; where consideration is nominal, the agreement should be executed as a deed.
The representations and warranties of the Joining Party confirm their capacity and authority to enter the agreement, that doing so does not conflict with any other obligation, and that they are not insolvent — standard protections for the Continuing Parties.
Amendments to the original agreement may be recorded in the same document, avoiding the need for a separate amendment agreement.
The exclusion of third-party rights under the Contracts (Rights of Third Parties) Act 1999 and the governing law clause specifying England and Wales are standard provisions in all English commercial agreements.
Additional compliance elements for a Joinder Agreement (England & Wales) used in United Kingdom include: Under the Companies Act 2006, Companies House maintains the register of UK companies. Section 386 of the Companies Act 2006 sets accounting record obligations. The Competition and Markets Authority (CMA) enforces the Consumer Rights Act 2015. The Financial Conduct Authority (FCA) regulates financial services under the Financial Services and Markets Act 2000. The High Court of Justice has jurisdiction under the Senior Courts Act 1981. Forms-legal.com provides this template as a starting point for United Kingdom-compliant documentation.
Cite this page
Reference this free template in an article, syllabus, or research note:
Forms Legal. (2026). Joinder Agreement (England & Wales) (United Kingdom) [Legal document template]. Forms Legal. https://forms-legal.com/uk/business/contracts/joinder-agreement-england-wales
"Joinder Agreement (England & Wales) (United Kingdom)." Forms Legal, 2026, https://forms-legal.com/uk/business/contracts/joinder-agreement-england-wales.
@misc{formslegal-joinder-agreement-england-wales,
author = {{Forms Legal}},
title = {Joinder Agreement (England & Wales) (United Kingdom)},
year = {2026},
howpublished = {\url{https://forms-legal.com/uk/business/contracts/joinder-agreement-england-wales}},
note = {Free legal document template. Based on Companies Act 2006}
}Also available for these jurisdictions:
Frequently Asked Questions
A Joinder Agreement (also called a deed of adherence or accession agreement) is a legal document by which a new party formally becomes a party to an existing contract, agreeing to be bound by its terms as though they had been an original signatory. Joinder Agreements are commonly used in England and Wales when a new shareholder joins an existing shareholders' agreement, a new partner joins a partnership agreement, a new member joins an LLP agreement, a new participant joins a joint venture agreement, a new guarantor joins a facility or loan agreement, or a new licensor or licensee joins a multi-party licensing agreement. Rather than reissuing the original agreement with all parties signing a fresh copy, a Joinder Agreement supplements the original document and is typically shorter and more straightforward to execute.
Yes, a Joinder Agreement is a legally binding contract under English law, provided it satisfies the requirements of a valid contract: offer, acceptance, consideration, and the intention to create legal relations. Consideration is typically the mutual exchange of undertakings — the Joining Party's promise to comply with the original agreement in exchange for the Continuing Parties' acceptance of the Joining Party. Where consideration is absent or nominal (such as £1), the agreement should ideally be executed as a deed (signed, witnessed, and delivered) to confirm enforceability for a 12-year limitation period under the Limitation Act 1980, compared to 6 years for a simple contract. Most commercial joinder agreements are executed as simple contracts with adequate consideration. Under United Kingdom law, Companies Act 2006, parties should seek independent legal advice from a qualified lawyer to confirm compliance with all applicable requirements. Under the Companies Act 2006, Companies House maintains the register of UK companies. Section 386 of the Companies Act 2006 sets accounting record obligations. Forms-legal.com provides this template as a starting point for United Kingdom-compliant documentation.
A Joinder Agreement and an Addendum (or Amendment Agreement) serve different purposes, though they are both supplementary to an existing contract. A Joinder Agreement specifically adds a new party to an existing contract, making them subject to the contract's rights and obligations in a particular capacity (e.g. as a shareholder or guarantor). An Addendum or Amendment Agreement, by contrast, modifies the terms of an existing contract — changing clause wording, adding new provisions, or deleting existing ones — without necessarily adding a new party. A Joinder Agreement can also include amendments to the original agreement, which is common when the addition of a new party requires certain terms to be updated (such as shareholder voting thresholds or profit-sharing ratios). Under United Kingdom law, Companies Act 2006, parties should seek independent legal advice from a qualified lawyer to confirm compliance with all applicable requirements. Under the Companies Act 2006, Companies House maintains the register of UK companies. Section 386 of the Companies Act 2006 sets accounting record obligations. Forms-legal.com provides this template as a starting point for United Kingdom-compliant documentation.
A Joinder Agreement does not need to be executed as a deed to be legally binding, provided it contains adequate consideration. Most commercial joinder agreements are executed as simple contracts — signed by the joining party and the authorised representative of the continuing parties — without the formality of deed execution (which requires witnessing and delivery). However, there are circumstances in which deed execution is preferable or required: (1) where the consideration is nominal or absent; (2) where the original agreement itself is a deed (to preserve consistency); (3) where the agreement relates to property interests that must be created or transferred by deed; or (4) where a longer limitation period of 12 years is desired. If the original shareholders' agreement or partnership agreement was executed as a deed, the joinder should also be executed as a deed.
Civil Procedure Rules Part 19 (CPR Part 19) governs the addition, substitution, and removal of parties in court proceedings in England and Wales. It is relevant to a Joinder Agreement in a different context from the contractual joinder: where an existing dispute under the original agreement has already been litigated or is likely to be litigated, CPR Part 19 sets out the procedural rules by which the court may order that a new party be joined to those proceedings. A new party may be added under CPR Part 19 where their presence is necessary for the court to resolve all matters in dispute, or where there is a common question of law or fact relating to their claim. The Joinder Agreement itself is a contractual instrument, not a court order, but it is important to acknowledge the CPR Part 19 framework so that parties understand how a newly joined contractual party may become involved in dispute resolution.
In English commercial contracts, standard practice requires the Joining Party to give a set of representations and warranties to the Continuing Parties in a Joinder Agreement. These typically include: (1) capacity — the Joining Party has full legal capacity and authority to execute the joinder and assume the obligations of the original agreement; (2) authorisation — where the Joining Party is a company, the execution has been duly authorised by its board of directors; (3) no conflict — the execution and performance of the joinder does not conflict with any law, regulation, court order, or existing agreement to which the Joining Party is a party; (4) enforceability — the joinder constitutes the valid, binding, and enforceable obligations of the Joining Party; and (5) no insolvency — the Joining Party is not insolvent under the Insolvency Act 1986 and has not taken steps to commence any insolvency or administration proceedings.
This template is provided for informational purposes only and does not constitute legal advice. Laws vary by jurisdiction and change over time. Consult a qualified attorney for advice specific to your situation.Full disclaimer
Found an error? Let us knowRelated Documents
You may also find these documents useful:
Shareholders' Agreement (UK)
Protect the interests of all shareholders in a company incorporated in England and Wales with a detailed Shareholders' Agreement. This legally binding document governs the relationship between shareholders and the company, covering board composition, reserved matters (veto rights), dividend policy, share transfer restrictions with pre-emption rights, tag-along and drag-along rights, deadlock resolution, good leaver and bad leaver provisions, restrictive covenants, and confidentiality obligations. Drafted in accordance with the Companies Act 2006 and English common law, this template is suitable for private companies with two or more shareholders who need clearly defined governance rules.
Partnership Agreement (UK)
Establish a legally binding partnership in England and Wales with a detailed Partnership Agreement drafted in accordance with the Partnership Act 1890. This template covers all essential provisions for a general partnership, including capital contributions, profit and loss sharing, management duties, banking arrangements, accounting obligations, retirement and expulsion procedures, dissolution, non-compete restrictions, and dispute resolution. Compliant with HMRC Self Assessment requirements, the Data Protection Act 2018, and the Contracts (Rights of Third Parties) Act 1999.
Joint Venture Agreement (UK)
Establish a contractual joint venture between two businesses or individuals in England and Wales with this detailed Joint Venture Agreement. Drafted in accordance with English contract law, the Partnership Act 1890, the Companies Act 2006, and the Competition Act 1998. Covers contributions, profit sharing, management, intellectual property ownership, confidentiality, competition compliance, and termination. Suitable for project-based ventures, technology partnerships, real estate collaborations, and commercial joint projects.
Settlement Agreement (England & Wales)
Create a legally compliant Settlement Agreement for England and Wales. Formerly known as a compromise agreement, this document settles employment claims upon termination. Covers termination payments (tax-free up to £30,000 under s.401 ITEPA 2003), waiver of claims under ERA 1996 and Equality Act 2010, independent legal advice certificate, agreed reference, garden leave, post-termination restrictions, and ACAS COT3 compliance. Download as PDF or Word.
Non-Disclosure Agreement (NDA) (UK)
Protect your confidential business information in England and Wales with a legally sound Non-Disclosure Agreement. Whether you are sharing trade secrets with a prospective partner, disclosing proprietary technology to a developer, or presenting financial projections to a potential investor, a properly drafted UK NDA keeps your sensitive information under strict legal protection. Our template is drafted in accordance with English common law and incorporates the key provisions required for enforceability in England and Wales.