Underground sign in Paddington station in front of escalators and steps

Transport for London (TfL)Transport for London (TfL)

Find out about TSSA in TfL


TSSA is the biggest trade union in Transport for London. We represent staff in TfL offices and stations, bus operations, London Underground, TfL Rail, overground and anywhere the TfL network extends to. We actively engage with our members, holding weekly meetings and engaging extensively with the business.

We represent everyone from apprentices to senior managers. We are the only union with recognition in all parts of the business, including recognition for collective bargaining on pay and key industrial issues, including Equality, Diversity and Inclusion (ED&I). We're also the only union that is recognised for collective consultation on behalf of senior managers.

London Underground group

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Sam Tarry - MP Ilford South

TSSA members attending a rally

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TSSA Helpdesk

0800 328 2673 United Kingdom

1800 805 272 Republic of Ireland

Helpdesk Enquiry Form

Member advice from our Helpdesk

If you are a TSSA member and are looking for advice or assistance in connection with your employment or membership, you can contact our Members’ Helpdesk.

We can advise on a range of workplace issues including; discipline and grievance hearing, maternity rights and redundancy.

Helpdesk opening hours: 09:00 - 17:00 Monday - Thursday  |  09:00 - 16:00 Friday

Please note: we cannot undertake to provide advice to non-members, to members of other unions, or to members on behalf of their partners/friends. If you are not yet a member, please join TSSA online.