If you need to get in touch with GMB Union or find out the GMB Union contact number, you’ve come to the right place. GMB is one of the UK’s largest and most well-known trade unions, representing hundreds of thousands of workers across a huge range of industries — from healthcare and retail to energy and local government. Whether you’re an existing member dealing with a workplace issue, someone who wants to know more about joining, or simply looking for a phone number or email address to point a colleague towards, this page has got you covered.
Getting in touch with your union shouldn’t feel complicated. GMB offers several ways to reach them, including a national office number, a dedicated joining line, and regional offices spread right across the UK — so no matter where you’re based or what your query is about, there’s always someone available to help. Below you’ll find all the key contact details you need, including the main GMB Union contact number, email address, head office address, opening hours, and a breakdown of regional offices. Have a read through and find the most relevant contact for your situation — it’ll save you time and get you to the right person faster.
GMB Union National Contact Details
The GMB national office is based in London and handles general enquiries from members and the public alike. Here’s how to reach them:
- Official Website: gmb.org.uk
- Phone: 020 7391 6700
- Email: info@gmb.org.uk
Head Office Address:
Mary Turner House
22 Stephenson Way
London
NW1 2HD
Office Hours: Monday to Friday, 9:00 AM – 4:30 PM
Thinking About Joining GMB?
If you’re looking to become a member, it’s worth calling the dedicated joining line rather than the general enquiries number — you’ll get a quicker response from someone who can walk you through the process.
- Joining Enquiries Phone: 0141 849 6691
- Hours: Monday to Friday, 9:00 AM – 4:30 PM
How to Contact Your Local GMB Regional Office
GMB isn’t just a national organisation — it runs regional offices across the UK, so there’s likely one closer to home that handles issues specific to your area. Here are some of the most commonly contacted regional numbers:
| Region | Contact Number |
|---|---|
| London Region | 020 8202 8272 |
| Scotland | 0141 332 8641 |
| North East, Yorkshire & Humber | 0300 013 3377 |
| Southern Region | 020 8397 8881 |
For a full list of regional offices, head to the GMB Regions directory on their official website.
When Might You Need to Call GMB?
There are plenty of reasons you might want to get in touch, and none of them require you to be in a crisis. People contact GMB for all sorts of day-to-day things, including:
- Questions about their membership or account details
- Workplace disputes or issues with an employer
- Getting legal advice or support
- Health and safety concerns at work
- Simply wanting to join the union
- Tracking down their local workplace rep
If you’re unsure whether GMB can help with your situation, it’s always worth a call — their team are used to fielding all kinds of questions.
Frequently Asked Questions
What is the main GMB Union contact number?
The main number for GMB’s national office is 020 7391 6700, available Monday to Friday during office hours.
What is the GMB Union email address?
You can email the national team at info@gmb.org.uk for general enquiries.
How do I find my nearest GMB office?
The easiest way is to visit the GMB website and use the Regions directory. It lists every regional office along with their contact details.
Can non-members contact GMB?
Absolutely. If you’re not yet a member but want to find out more or need some initial guidance, GMB welcomes enquiries from prospective members too.
Final Thoughts
Getting in touch with GMB Union is straightforward once you know which number or office to contact. Whether you’re reaching out to the national office in London, calling your local regional branch, or simply dropping them an email, GMB has made it reasonably easy for both members and non-members to get the support they need.
If you’re facing a workplace issue, thinking about joining, or just have a general question, don’t hesitate to pick up the phone or send an email — that’s exactly what the union is there for. Workers’ rights matter, and having a union like GMB in your corner can make a real difference when it counts most.
Bookmark this page so you always have the GMB Union contact number handy when you need it. And if you found this helpful, take a look at our other union guides for more practical information.