Now exit is inevitable, any EU law currently applicable in the UK may be deviated from. Policing and oversight of commission regulations falls to each member state but any operator deviating could reasonably argue that in the interest of safety or survival it could not be expected to comply with a rule whose supremacy is temporary and, moreover, can not now be appealed to an EU court.
Come on BALPA, act now and challenge the 'scientific approach' to EU FTL and stop my employer f*((ing me over.
Apologies for the syntax failure, I am tired.