Votes cast in the London-wide region. These votes are used to apportion additional members to parties unrepresented in the constituency vote.
View the 14 seats elected by first-past-the-post in London-wide in 2021.
| Barnet and Camden | Lab hold | ||
| Bexley and Bromley | Con hold | ||
| Brent and Harrow | Lab hold | ||
| City and East | Lab hold | ||
| Croydon and Sutton | Con hold | ||
| Ealing and Hillingdon | Lab hold | ||
| Enfield and Haringey | Lab hold | ||
| Greenwich and Lewisham | Lab hold | ||
| Havering and Redbridge | Con hold | ||
| Lambeth and Southwark | Lab hold | ||
| Merton and Wandsworth | Lab hold | ||
| North East | Lab hold | ||
| South West | Con hold | ||
| West Central | Con hold |