Federation of Master Builders
The UK's largest trade association for small and medium building firms. FMB members are independently inspected before joining and agree to a code of practice.
Verify on the official register →
Based on public register entries and source listings collected up to 14 Jul 2026. Not an official membership count.
Check a specific trader
Thinking of hiring someone? Confirm their current FMB status on the official register, then run their name through our Cowboy Checker to see their reviews, credentials and company details in one place.
Where FMB holders are
- London
- Cardiff
- RG1
- BR1
- PO1
- UB1
- Wembley
- Gerrards Cross
- Manchester
Trades that hold it
Builder · 3,066Bricklayer / Mason · 1,148Roofer · 153Damp Proofing / Waterproofing · 10Plasterer / Drywaller · 9Carpenter / Joiner · 9Landscaper · 9Plumber · 9Electrician · 8
FMB holders with review evidence
These businesses hold a current FMB entry and have customer reviews we can show. This is a small slice of all holders, not the register itself.
- Castle Windows (Newbury) Limited
- Kinson & Birch Ltd
- Imperial Residential Building & Roofing Limited
- Merstham Glass Limited
- LM Quin Construction Ltd
- Michael Kavanagh Building & Roofing Services
- PBH Garage Doors Limited
- Celtic Property Maintenance Services Limited
- ABT Roofing And Home Improvements Ltd
- Kenway Ltd
- W E Cox & Sons Limited
- Clarkes of Brighton
Common questions
What is Federation of Master Builders?
The UK's largest trade association for small and medium building firms. FMB members are independently inspected before joining and agree to a code of practice. (Trade association.)
How many traders hold Federation of Master Builders?
We track 5,259 traders with a Federation of Master Builders entry, based on register and listing data collected up to 14 Jul 2026. This reflects the public entries we have collected, not necessarily the scheme's complete membership.
How do I check whether a specific trader holds Federation of Master Builders?
Check the official register at https://www.fmb.org.uk/find-a-builder/, or look the trader up on MyTrustedTraders. Profiles show the credentials we have found for them, alongside reviews and other public evidence.
Keep checking
All certificationsCowboy CheckerCompany Health CheckCredential Guide by trade
We show what the public sources say, with dates. A listing here is not an endorsement, and absence from our data does not mean a trader is unregistered. Always confirm current status with the scheme before you hire.