It's really interesting how some bands will hit it big in one country, but not another. Especially between the U.S. and the U.K. - as both countries are the primry forces in Rock and Roll.
One band that was huge in the U.K. but hardly made a dent in the U.S. was Slade. They had a handful of great albums, and put out a bunch of catchy singles (many of them went to #1 in the U.K.), but in the U.S. they barely charted at all.
Albums like Slayed, In Flame, and Old New Borrowd and Blue were huge sellers in the U.K. and are considered classics to this day. They were also fairly influential over there, too.
The interesting thing is that they were very influential in the U.S, with their best known fans being KISS and Quiet Riot (but many other bands as diverse as Oasis and Little Feat were Slade fans as well).
A couple of years ago the Slade albums were remastered and re-released on CD with bonus tracks. I've reviewed one of them (Slayed) and plan on reviewing a couple more in the weeks to come.
They were great at writing catchy, hooky, Pop influenced Hard Rock songs.