My controversial opinion is that these shouldn't be in OSM.
The definitive boundaries are freely available as open data in OS
Boundary Line (although they won't usually appear there until after
the boundaries take effect). The current UK-wide coverage of ward
boundaries in OSM is pretty minimal,
Hello,
a complete revamp of the electoral wards in Lambeth borough comes into
effect in May 2022, with 25 new wards.
(See
https://love.lambeth.gov.uk/a-new-political-map-for-the-2022-lambeth-borough-council-elections/
for info).
I'm guessing the boundaries are available as open data,
and some
