Search

How can we help?

Icon

Contractual variations: to write or not to write?

In the recent case of Globe Motors Inc v TRW Lucas Variety Electric Steering Ltd, the Court of Appeal held that a contractual clause requiring variations to be in writing did not prevent a variation being agreed by a different method i.e. verbally or by conduct.

The case involved a long term supply agreement which contained a clause specifying that any variation of its terms was to be in writing and signed by the parties. Although not the main issue in question in this case, the Court of Appeal considered the validity of this clause.  It recognised that the overriding principle of freedom of contract means that parties are free to include terms regulating the manner in which the contract can be varied, however, it could find no principled basis on which to restrict the manner of a contract variation. It ultimately found that parties are free to vary the contract by a different method if they so wish despite the presence of a clause to the contrary.

Chambers and Partners

The Clarkslegal team are commercial and good to work with. They get what our business needs and tell me what I need to hear.

Whilst this case was not brought in an employment context, its principles are nonetheless relevant to employers and the contracts they enter into.  However, employers should not be downing drafting tools and ditching such clauses following this case!  Firstly, the comments made by the Court of Appeal were obiter which means they are not binding, although they give a good indication of how courts may interpret such clauses.  Secondly, from a practical perspective, it remains important for parties to clearly set their preferences for variations and, obviously, written variations will be much easier to evidence should there be a dispute.  Finally, in the event that an employer is accused of varying an agreement verbally or by its conduct, the presence of such a clause may still assist it in demonstrating that no variation was agreed.  Therefore, the message from this case is really for parties to be wary of inadvertently agreeing variations to contracts in the mistaken belief that changes can only be in writing, rather than any message to alter their drafting in this regard.

Employmentbuddy.com 

Disclaimer

This information is for guidance purposes only and should not be regarded as a substitute for taking legal advice. Please refer to the full General Notices on our website.

Author profile

Monica Atwal

Managing Partner

View profile

+44 118 960 4605

About this article

Read, listen and watch our latest insights

art
  • 03 June 2026
  • Employment

Holiday Pay Record Keeping – What this new duty means for employers

The Employment Rights Act 2025 made certain changes to the rules around holiday records, which came into effect on 6th April 2026.

art
  • 03 June 2026
  • Corporate and M&A

Is your Company’s Register of Members accurate? The hidden risks of getting it wrong

Ensure your company’s Register of Members is accurate and compliant. Learn the legal risks, common mistakes, and how to protect your business from penalties.

art
  • 02 June 2026
  • Corporate and M&A

Clarkslegal welcomes leading Corporate Law expert Mark Ridley as Partner

Clarkslegal is delighted to announce the appointment of Mark Ridley as a new Partner in the Corporate and Commercial team.

art
  • 28 May 2026

Newly rebranded legal services group Orwins makes investment in Clarkslegal

Orwins, the law firm for ambitious businesses and high net worth individuals, has today, 27 May 2026, announced a significant investment in Reading-based commercial law firm Clarkslegal.

art
  • 20 May 2026
  • Immigration

AI vs Home Office approved Translations – why migrants are paying the price

AI is transforming almost every professional sector. Law firms now use AI-assisted drafting, businesses rely on automated translation software, and governments increasingly use digital systems for decision-making.

art
  • 20 May 2026
  • Employment

Trade Unions Right of Access from October – What you need to know

Under the Employment Rights Act 2025, independent Trade Unions (i.e. those with a certificate of independence) will have a right to access workplaces (physically and digitally) from October 2026.