It was a cockup on my part - I thought that I was changing the "outdoor_seating" tag on the pub, not the "outdoor_seating" tag on the outdoor seating...

This failed with "cannot upload changeset: 520 <none> at /home/ajtown/src/osm-revert-scripts/lib/Progress.pm line 104.", which isn't great.

The changeset comment was supposed to be "Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18370"

Some iffy data remains, see e.g. https://overpass-turbo.eu/s/27wN . Also I've no idea where changeset/124097210 came from.

@deduce technologies : what was the source of this data?

This changeset reverts some or all edits made in changesets 168631271, 168631326, 168631334, 168631918, 168648673, 168675005, 168676597, 168676615, 168680892, 168680909, 168680937, 168693810, 168693861, 168693935.

This changeset reverts some or all edits made in changesets 168631271, 168631326, 168631334, 168631918, 168648673, 168675005, 168676597, 168676615, 168680892, 168680909, 168680937, 168693810, 168693861, 168693935.

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

This changeset has been reverted fully or in part by changesets 168708079, 168708082 where the changeset comment is: Revert undiscussed guessed-geometry import, see osm.org/user_blocks/18428

I'm guessing that the gaps here are due to Storm Bert https://www.bbc.co.uk/news/articles/ckgndlp303go ?