Hello!
I hope you are good.
I can quote the fact that (was in a flyer mag) FlyBE says that it will accept either modular or integrated candidates BUT if coming through the modular route they would like to see training at NO MORE than 2 different FTO. I think they was mentioning this after the 14 writtens for the fATPL. So I think i would be right in saying
PPL place A
Hour Building place B
14 written exams place C
THEN YOUR
Commerical
ME
IR
MCC
at no more than 2 providers.
BUT... In my personal opinion I would say after the PPL and writtens you try and stick to the same FTO.