Find your MP
Who is my MP?
Your MP is the Member of Parliament elected for the constituency you live in. There are 650 of them, one per seat, and your postcode is what decides which one is yours. Enter it below and you will get their name, party and constituency — and, if you want it, a letter to them that arrives from your own name and address.
How your postcode decides your MP
The United Kingdom is divided into 650 parliamentary constituencies. Each one elects a single MP at a general election, and that MP is answerable to the people who live inside the boundary — not to anyone outside it. The boundaries were last redrawn for the 2024 general election, so an MP you wrote to years ago may no longer be the member for your street.
Because the boundaries do not follow council wards, towns or counties neatly, a postcode lookup is the only reliable way to know your seat. We match your postcode to its constituency and then read the sitting member straight from the UK Parliament Members API, so a by-election or a change of party is reflected within a day.
- One MP per constituency, elected at the general election or a by-election.
- Your address, not your workplace or your birthplace, sets which MP is yours.
- Vacant seats between a death or resignation and a by-election have no MP at all.
What your MP can actually do for you
An MP has three real levers. They can vote on legislation and sign amendments and early day motions. They can put a question to a minister and get a written answer that has to be published. And they can take up an individual case with a department, a council or an agency, which is often the fastest route through a stuck immigration, benefits or housing problem.
What an MP cannot do is overturn a court decision, instruct a council officer, or intervene in a matter that belongs to a devolved parliament. In Scotland, Wales and Northern Ireland, health, education and housing are largely handled by MSPs, MSs and MLAs, so a letter about a hospital in Cardiff belongs with a Senedd member rather than an MP.
Writing once you know who they are
Knowing the name is the easy half. A letter that names one issue, states the ask in the first sentence, and carries your full postal address will be read by a caseworker and logged. A copied campaign paragraph, sent by four hundred people in the same words, is counted once and answered with a form reply.
Our writing flow gives you a blank page, checks the letter is your own words, and sends it from your own name to your MP's parliamentary address. You confirm by email; we hold nothing after five weeks.
Common questions
- How do I find out who my MP is?
- Enter your full postcode. We match it to one of the 650 UK constituencies and show the sitting MP, their party and their constituency.
- Can I write to an MP who is not mine?
- You can, but their office is under no obligation to reply and most do not. The exception is a member of the House of Lords, who has no constituency and may be written to by any resident.
- My MP changed at the last election. Is this up to date?
- Yes. Members are read from the UK Parliament Members API rather than a stored list, so by-elections and party changes appear as soon as Parliament publishes them.
- Is it free to write to my MP?
- Yes. There is no charge, no account and no subscription. You confirm your message by clicking a link in an email.
Last updated 2026-08-25.