What a load of unmitigated bollocks ! Even if the Int people had known about the planning of the raid on Coventry, just what could the RAF have done about it without denuding other areas, arguably more vital to the war effort, of the air cover that was already fairly thinly stretched all over Southern England at the time ?
I suppose that also might be a tenuous thread to the author's assertion / assumption but without him ever having worked at BP he'd never know for sure would he ?