tartare, I have never flown the Lightning.
The only rule-breaking which was commonplace back in the late 1970s which I can recall was the scant regard given by squadron crews to the ridiculous Vulcan co-pilot 'phase' restrictions when non-constituted crews flew together. IFS actually wrote that the squadron practices in ignoring those rules were safer than the restrictive 'phase' system, because co-pilots were clearly developing their skills much quicker and making better progress towards captaincy.