The launch of Labour Tribes Mapped brings to light the complex network of relationships and affiliations within today’s Parliamentary Labour Party. These relationships and affiliations are of immense importance not just for the Labour Party, but the whole country in the four years ahead.

Recent events have underlined the intricacy of the landscape facing Keir Starmer, and indeed anyone seeking to work effectively with Labour MPs. PLMR is pleased to partner with LabourList on this exclusive project, helping to bring new insight into the make up of the PLP and offer clarity to those seeking to understand Labour’s internal dynamics.

This tool represents a significant advancement in the ability to engage effectively with the Parliamentary Labour Party. By systematically mapping MPs’ affiliations, including those to informal or opaque groupings, and by analysing voting behaviour on contentious issues such as welfare reform and assisted dying, we reach a level of insight that is rare and invaluable.

The integration of key data points, from electoral majority and regional representation to ministerial appointments and union ties, further enables more targeted and strategic engagement. With Labour one year of five into government, this resource will be essential for informed and effective advocacy.

See the LabourList story here: https://labourlist.org/2025/07/labour-tribes-mapped-about-mps-data-plmr-labourlist-interactive-map/