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Privacy Policy

GMB privacy policy


When you join GMB, you provide us with information so that we can administer your membership. GMB takes the security of your personal information seriously, and puts stringent security measures in place to make sure your information is safe.


As a democratic organisation run by GMB members for GMB members, transparency is important to us.


This privacy statement explains how we process information about you. If you have any questions, please email GMB’s Data Protection Officer on or write to us at GMB Union, Mary Turner House, 22 Stephenson Way, London, NW1 2HD.



  1. What we use your information for

When you join GMB, you consent to us using your information for GMB business. You can see GMB’s aims objectives and rules in our rule book here:


GMB business includes providing you with membership services, membership benefits, informing you about campaigns and the work we are doing on your behalf and in order to represent you.


We will use the information you provide when you join GMB or update your details with us to contact you (see section 2 below), to maintain accurate records, to assist with employment disputes and injury claims and to conduct ballots and internal elections. This may mean, where necessary, sharing your claim details with GMB’s own legal firm Unionline or other legal firms we use to support GMB members – this will always be done in a confidential manner.


It is important to understand who GMB members are.  Providing equality monitoring information is not mandatory for members, but where that information is freely given we will use the information you provide us to give statistical information about the make-up of GMB, which may include such information as gender, ethnicity, age, sexual orientation, disability and migrant worker status and to contact you on relevant issues or union activity.


On occasion, we may also use your information to conduct research about GMB members’ views, for example, contacting you to find out your views on a topical issue or on your satisfaction with GMB.


Where you sign up to attend GMB training, we will also keep a record of that to help track your learning and progress, and to communicate about courses you might be interested in.


Information you provide will be kept throughout your membership of GMB (it’s a legal requirement for us to keep our records up to date) and for a reasonable period after membership as may be needed to enable you to access any post-membership benefits. We also have to keep some records after you have left GMB in order to comply with the law.




  1. Contact from GMB

GMB union uses information provided by you as a member to carry out our role as your trade union. That may include contacting you by post, email, SMS, phone call or on social media. As a trade union we are legally obliged to contact you on certain matters.  We will contact you to provide ‘membership services’.  ‘Membership services’ include information related to GMB campaigns, member benefits, industrial action ballots, GMB internal elections and whether or not the union should run a political fund as well as any other issues relevant to your GMB membership and classified as membership services.


We offer the option to opt out of different communication methods, by clicking here and visiting the MyGMB area:

Where you have opted out of receiving this information by all communication methods, you will receive it by post.


  1. Signing up to GMB campaigns

When you join a GMB Campaign or fill in a survey on the GMB website, GMB will notify you what signing the petition entails – this states that the act of signing the petition means that we will use that information to contact you in future to keep you updated on campaigns you are interested in. You can unsubscribe or ask for your information to be deleted at any time.


Where you are GMB member, we may keep this information against your member record so that we know what campaigns you are interested in.




  1. When you contact GMB

When you contact GMB, the forms you complete or the emails you send may include information about you, such as your name as the contact point for an organisation, your email address, the organisation's address and your enquiry. We use this information to respond to your enquiries, and may use information provided to update your membership record. Our members and officers may need to record and pass information internally within GMB in order to answer your inquiry.


If you are a member, when you contact us about a problem or issue, we may need to ask you for additional information. You are under no obligation to provide additional information, but it may impact upon your case if you do not do so. 



  1. Processing your information: who, what and where?

GMB employees and lay representatives will have access to GMB membership information in order to provide you with services and communicate with your as part of your GMB membership. 


GMB will never sell your information to a third party for their own use. We will use third parties to provide services on our behalf, this includes but is not limited to such organisations as mailing houses to print and deliver letters for us, email service providers and research companies who conduct member surveys. We may use contractors or other agents to deliver GMB member services or provide benefits.


We check every supplier we use to ensure safety and security of data, and to make sure that membership information is only used for the purposes we intend.  


We will make all efforts to ensure GMB information is stored within the EEA, but there may be occasions where this is not possible. Where member information is transmitted outside the EEA, GMB will always ensure appropriate data processing agreements are in place and that GMB member information is secure. Information will be covered by EU-US Privacy Shield or appropriate model clause contracts where stored in the US.


GMB is organised at a number of levels, at which both employees and lay member representatives provide member services. Your information may be collected and shared between those different parts of the union, which include GMB nationally, regionally and at branch and workplace level.


Social media has become a way of life for many people. GMB may use the information you provide to contact you on social media, but will never give information to social media companies for their own use.



GMB and the Labour Party

GMB does not share data with the Labour Party except in specific circumstances where individuals have given explicit consent for that information to be shared. GMB will provide information to the Labour Party when a member opts to become an ‘affiliated supporter’, a delegate to a Labour Party Constituency or a delegate to a Labour Party conference.



GMB and Unionline

GMB owns a law firm called Unionline. It is a free service for GMB members to use. In order to ensure those who contact Unionline directly are GMB members and so eligible for free legal advice, Unionline employees have access to GMB membership information. That information is never used for any other activity than processing legal advice. To see Unionline’s privacy policy, click here:



Interacting with the GMB website

GMB's website and membership system interact so that you are able to manage and access your GMB membership information. Both systems are provided by third parties under strict data sharing agreements. You can see how that works if you log into your MyGMB account here:


GMB also uses cookies. When you first visited the GMB website, you will have been asked to click to accept 'cookies' (which you can choose to do or not). A cookie is a tiny text file that is stored on your computer. We may use cookies – including analytics cookies provided by companies such as Google – in order to tailor your experience on our site according to the preferences you have specified. However, we will only access the information that we stored in your cookie file. We will not access any information stored in a cookie placed by other websites. Our cookies do not contain personally identifiable information, other than your IP address, which itself is only very rarely enough to identify you as an individual. 


We may use tracking pixels to encourage people to revisit GMB's website, get active in a campaign or to join GMB. 


Where we hold information for MyGMB, petitions and campaigns, if you are a GMB member that may link directly to the membership system. However, some information is held on a separate UK server. That server is UK based, and has:

  • 24/7 Physical security guard services
  • Physical entry restrictions to the property and the facility
  • Physical entry restrictions to our co-located data centre within the facility
  • Full CCTV coverage externally and internally for the facility
  • Biometric readers with two-factor authentication
  • Facilities are unmarked as to not draw attention from the outside
  • Battery and generator backup
  • Generator fuel carrier redundancy
  • Secure loading zones for delivery of equipment



Basis for processing your information

This is a bit technical, but the law says we have to have certain reasons for processing any data we hold. In the case of GMB membership data, there are two reasons we process data:


Consent – when you join GMB you sign up to our organisation and rule book. You give consent for us to use your membership information for GMB business. That is the basis for the majority of processing of information GMB does.


Legitimate interest – this is where the organisation has a legitimate reason for using your information. For example, there is a legitimate interest in conducting research into what GMB think about certain issues so that the union can campaign on issues that matter to members. That might not be explicitly contained in the rule book, but it is something that is a legitimate benefit to members and the union and so we would use the ‘legitimate interest’ reason for processing information.


Making a complaint

We provide you with the contact details of our Data Protection Officer (Bob Robinson on but should you wish to make a formal complaint against GMB, you can find information on the Information Commissioner’s website:



What does this all mean to me as a member?

Good question. By joining GMB you agree to our processing of your personal information, including sensitive personal information, such as trade union membership, for the purposes outlined above. It sounds very legal and technical, but the underlying message is that we will look after your information, keep it securely and only use it for services and benefits related to your GMB membership. Where we use third parties to do things for us, we do everything we can to make sure they are secure too. When it comes to communication, you are in control – you can change your preferences whenever you like. If there is every a problem that presents a risk to your information, we will let you know.


Any more questions? No problem. Drop Bob a line - he’s our data protection officer. He’s on


Updated: 07.08.18


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