Indeed...............The others all had Richard Sinclair in the line up at some point.

1) XANG, Mystery, Frank Zappa, Brand X.
2) UK, Curved Air, Jethro Tull, Yes.
3) Steve Hillage, Rod Argent, Moody Blues, Strawbs.
4) East of Eden, Genesis, PFM, Curved Air.
5) Genesis, Kaipa, Jethro Tull, Fish.
6) JamForte, VAXman, KeithieW, Teermin8r.
7) A trick of the tail, Wind and wuthering, And then there were three, duke.
8) Caravan, The Tangent, Camel, Hatfield and the North. - The Tangent, Richard Sinclair - Woj.
9) King Crimson, Yes, Mike Oldfield, Vangelis.
10) UK, France, Germany, Netherlands.

You smart devils may find other answers but I'm looking for the ones that are in my pea brained head. OK?

Woj - 1
Others - 0