Compass is a left wing pressure group, aligned with the UK Labour Party describing itself as 'An umbrella grouping of the progressive left whose sum is greater than its parts'. Compass differs from a classic think tank in that it is a membership organisation and thus seeks to be a pressure group and a force for political organisation and mobilisation.
Compass was launched in 2003 with the publication of a founding statement called A Vision for the Democratic Left. Supported by a number of academics and Labour politicians unhappy with the political direction of Tony Blair this was the first attempt by Compass to develop a more coherent and radical programme for a progressive left government. Since then it has published a number of pamphlets and a series of booklets as part of its Programme for Renewal charting an alternative path for the New Labour Government and for progressive, Centre-Left activists in the UK.