So the UK gov mandates bus data to be release by operators in a custom format (TransXChange). The docs recommend getting the bus stop ref from OpenStreetMap...
We only have some refs from an outdated import, but it wasn't even a universal import only some regions did it.
@Strubbl presumably closed source. This is the http only exe/Java combo https://www.gov.uk/government/collections/transxchange
And this is the spreadsheet macros https://www.gov.uk/guidance/publish-bus-open-dataset