Nexus you say
But stop bleating on about tired crew, individual responsiblity not blanket legislation for the few who abuse. You're the captain, you are ultimately responsible for a safe flight, so accept that responsiblity and if you think a crewmember isn't fit - don't go! But don't highlight a problem for the majority of long distance commuters, drivers etc. who turn up perfectly ok.
but actually the one thing I can't do as a Captain is decide how tired my FO might be. That is down to him/her. The CAA should be aware of the abuses to it's regulations. If there was an incident then anybody who commuted more than 90 mins would be on very shaky ground. As the legal commander I have a right to expect that the FO has complied with all CAA/ BA regulations on checking in. Driving in from Devon or flying in from Spain is NOT complying with BA ops procedures. If you are going to travel long distances then make sure you do it the night before and not on the day you operate.