Former Wales star and other key players missing for Bristol...

Former Wales star Gavin Henson has been ruled out of Bristol's West Country derby against Gloucester.The fly-half starred kicked all of their points in their shock 12-11 win over Bath at Ashton Gate last month but has picked up a toe injury.Read: Henry Trinder to make first Premiership start for 11 months but 10 ruled out for GloucesterProlific try scorer Tom Varndell (toe), ex-Ireland lock Dan Tuohy (arm) and Siale Piutau (knee) will also miss the clash for the hosts, who have made six changes..., Former Wales star and other key players missing for Bristol...