Please don't add fiction like foot=use_sidepath to roads in the UK. Pedestrians use highways by absolute right unless explicitly forbidden (requiring a traffic order and a sign), therefore adding foot=no without a sign is also wrong.

If you read the wiki for that tag, you will note that it states: "This tag should only be applied in countries that have compulsory footways."
osm.wiki/Tag:foot%3Duse_sidepath

If you're adding separate sidewalks, please also set sidewalk:$side=separate on the parent street. That would be far more useful than adding non-existent access restrictions.