Thanks @reosarevok - I’ve now added the two versions of The Beat / The English Beat:
https://musicbrainz.org/artist/94515d4a-8c6c-44a9-ba47-20580b955e1a
https://musicbrainz.org/artist/063b9c01-f4d6-40de-8f90-9b277535d310
I haven’t added the release Bounce to the Ranking Roger version since I’m far from expert in that area, but if anyone would like to add it, it’s here:
https://www.amazon.co.uk/Bounce-Beat-feat-Ranking-Roger/dp/B01H5RGSEW
If someone thinks it’s worth adding the other version of UB40 as a separate artist that makes sense - I suspect it might keep causing issues down the line if one band is classed as the “original” when both have pretty equal claims and similar numbers of original members.
Thanks everyone for your help and advice.