Hawkwind appeared on

December 19th 1969

February 18th 1970

April 6th 1970

probably with this line up

Dave Brock  on guitar, harmonica and vocals
Nik Turner  on saxaphone
Mick Slattery  on lead guitar
John Harrison  on bass guitar
Terry Ollis  on drums
Dik Mik  on various electronic gadgets and audio generator.