Yes, Helen Sharman was the first British cosmonaut/astronaut (flew in late 80's). I was working at the Gagarin Cosmonaut Training Centre at that time and we all were surprised that she was selected and not Tim Mace who was a military pilot and a champion in parachut sport. (British) Politics were behind that decision.
Cosmonaut Biography: Timothy Mace
Both were very nice people. Tim, R.I.P.