Call me a cynic (many have) but I'll bet next year's pay rise that if Manager ATC asks SRG for a change in the rules they will lie on their backs and put their feet in the air. SRG have proved to be the toothless wonders we all suspected they were. Within a month we will have T&P combined at night without correctly validated assistants and for good measure they will probably declare Swanwick at night to be self relieving.
Z