I remember at PATCRU, [I SAID I was a BOF!!!]
A Cambrian Ba11 off EGGP climbing at 500+fpm, and a BEA Ba11 off EGCC at 500- fpm. Same route, same flight level. As BAW lobbed off first, [by 1 min,longer route] they got the priority!
we aim to please, it keeps the cleaners happy