Fear of prosecution for an inadvertent infringement
More the reason to use the Flight Information service's from London and Scottish......once in contact with these units you will be asked to wear our discrete sqwuak that will identify you to all other radar units that you are talking to the FIR sector........should you appear to be heading towards Controlled Airspace then that said controlling authority should advise London/Scottish to transfer the aircraft to their frequency to resolve the situation before an infringement happens!!