Did you see that the Bath tourist Board has restricted coach travel into Bath due to the number of coaches wrecking the streets and environment?
I think this is entirely the fault of Rick Steve's.
I have no idea why Bath is a must see according to Rick Steves! - and therefore Americans think they have to go there.
In my opinion it is certainly worth a half day if you happen to be in the area
However, it is certainly not worth a special trip from London to see it.
Visiting Winchester, Salisbury and Portsmouth Harbour are so much more interesting and worthwhile.
Honestly, forget Bath unless you happen to be in the area