Yep the chainset is an FSA Vero 50/34t
I contacted the shop where the work was carried out, for some reason they can't tell me the make and model of the bottom bracket but they can tell me it's a 68mm x 110mm English thread, which I think, is all I'd need to know if I ever wanted to upgrade it?
So, forgive my ignorance, but if I wanted to upgrade the chainset I would have to replace the bottom bracket with another 68x110 bracket that was compatible with whichever chainset I wanted to use, so powerspline or square taper? Is that correct?