Misc: a ---------- is the blue field behind the stars?

Questions

In what material is Rene Lalique best remembered for his work?

In which country did the R101 airship make its maiden flight?

Which British athlete was disqualified in the 1984 Olympic womens 3000 metres?

Which county includes most of the Cotswold Range?

Which Scottish rocker styled himself "sensational" and once had a role in Hair?