The party has 552,175 members, with a total of 179,113 of them now in the capital or the south east.
Labour’s strength in the capital and the south east – traditional Tory strongholds outside of inner London – has dramatically altered the geographic makeup of the Party.
Labour now has more members in London and the south east than it does in the whole of Scotland, Wales, Yorkshire, the West Midlands and the East Midlands combined.
Membership has surged since Jeremy Corbyn became leader in September 2015.
A full regional breakdown is published below.
Yorkshire & The Humber: 51,068
West Midlands: 37,291
East Midlands: 35,041
North West: 71,488
Greater London: 112,308
South East: 66,805
South West: 48,468
Total Members: 552,175