OK, I did a little more reading but it turns out that the actual order (
https://www.legislation.gov.uk/uksi/2022/37/note/made ) simply says 'the
new ward boundaries are those shown on the map in the Commission's office
... and here's a link to an electronic version of the same map' which
Just to be clear though Colin, in that particular instance when I said the
position of the railway line looked rather dodgy, that was when comparing a
high degree of congruence between Cadastral Parcels and the satellite
imagery (roads and buildings) and the adjacent railway lines cutting
through
If the position of the boundary is imported from a source that ultimately has a
very high precision, for example Ordnance Survey or a Council's GIS system
through a shapefile or similar, then the location as recorded in OSM will
likely be more accurate than what would be obtained from tracing
well, I did the first one! (Brixton Acre Lane)
https://www.openstreetmap.org/relation/13817756#map=15/51.4573/-0.1225
(Did I do it right...?)
It didn't actually take very long.
For the most part, I was able to simply tag roads with the relation.
For a few more outré bits where the ward boundary
