Do I have to give a reason for resigning?

No. A simple, neutral line is enough if desired, but there is no legal or professional obligation to explain reasons in writing.

Can I resign by email?

In most cases yes, but contracts should be checked first, since some require written notice specifically.

Can I withdraw my resignation once I have sent it?

Only if the employer agrees. Once accepted, a resignation generally ends the contract on the agreed date with no automatic right to withdraw it.

How much notice should I put in the letter?

Whatever the employment contract specifies as a minimum, since this cannot be reduced below the statutory floor.

Should I mention my new job in the letter?

It is not necessary and is often better left out of the written letter, with a brief verbal mention being sufficient if it comes up naturally.

UK Career Advice

Table of Contents

How to Write a Resignation Letter (UK Guide)

You have made the decision. Now comes the part that makes it real: putting it in writing. A resignation letter feels like it should be complicated, especially if you have never written one before. It is not. The best resignation letters in the UK are short, calm, and almost boring — and that is exactly the point.

This guide covers what to include, what to leave out, and the small mistakes that can quietly damage a reference. Use the free builder below to draft your first version in under a minute, then read on for the detail.

The short version

A UK resignation letter needs four things: a clear statement that you are resigning, your job title, the date, and your last working day.

It does not need a reason, a complaint, or an essay. Keep it professional, keep it short, and let your notice period — not your letter — do the talking.

Build your resignation letter

Your full name

Your job title

Manager’s name (optional)

Company name (optional)

Your last working day

Not sure what this should be? Check your notice period with our free calculator first.

Include a short thank-you line

This is a starting draft, not a final document, and nothing you enter is saved or sent anywhere. Always read it back before sending.

What every resignation letter needs

Strip away the formatting and a UK resignation letter only needs four elements: a clear statement that you are resigning, your current job title, today’s date, and your last working day calculated from your notice period. Everything else — the thank you, the warm closing line, the offer to help with handover — is optional polish, not a requirement.

You are not obliged to explain why you are leaving. Many people add one brief, neutral line out of courtesy, such as taking up a new opportunity. You never need to justify it in detail, and you should never use the letter to air grievances, however tempting that might feel in the moment.

Verbal first, written second

The most professional approach, and the one that protects your reference best, is to tell your manager in person or by call before anything lands in their inbox. Nobody wants to learn they are losing a team member from an email. Have the conversation first, then follow up immediately with the written letter, which becomes the official, dated record for HR.

Check your contract before you do either. Some contracts specifically require notice to be given in writing for it to count, so a verbal conversation alone might not start your notice period clock.

Resigning during probation

The structure of the letter does not change, but your notice period likely will. Probation notice is often shorter — commonly a week — though it depends entirely on your contract. Check the exact wording before you put a last working day in writing, since getting this wrong can mean leaving earlier or later than you intended.

Common mistakes that damage a reference

A handful of small missteps come up again and again, and they matter more than people realise when a future employer calls for a reference.

Criticising the company or a manager: even if it is justified, it belongs in an exit interview, not the letter.

Getting the last working day wrong: always calculate from your contractual notice period, not your preferred date.

Sending it on a Friday afternoon: not a rule, but a courtesy — give your manager time to respond rather than leaving them with it over a weekend.

Forgetting to keep a copy: save a dated copy of what you sent, separate from your work email account.

If you get a counter-offer

It happens more than people expect, particularly once a manager realises a resignation is genuine. Take a day before responding either way. Ask yourself honestly whether the original reasons for leaving were really about pay, because if they were not, a counter-offer rarely fixes the underlying problem long term.

Frequently asked questions

Want a polished, ready-to-send version?

Our builder above gives you a solid first draft. For a fully polished set — standard resignation, a shorter version for probation, and a formal version for senior roles — get the Resignation Letter Template Pack: three editable Word templates plus guidance notes on tone and timing.

Get the Template Pack

If you are resigning to move into a different field rather than just a different employer, our Career Change UK 2026 guide is worth reading next. And once your last day is set, it is worth getting your cover letter and interview answers ready early — our Cover Letter UK guide and free CAR Method Interview Guide will save you time.

Want a second pair of eyes on your letter or your next move?

A 15-minute call costs nothing and could save you from a mistake that follows you into your reference.

Book a Free 15-Minute Call View Pricing

Found this useful?

Share on Facebook Share on LinkedIn

This article is general guidance, not formal legal advice. If your situation involves a dispute, contact an employment solicitor or Acas.