Long sleeved yellow top medium size 38-40 fits me very nicely, glad I didn't go for the larger one although I normally take a 42" suit jacket.
I got medium bib shorts as there were no large ones available, they too are marked 38-40" (!) and are a bit tight on me, but wearable still. I am 5`11" and about 13 stone. Hoping they may stretch a bit with use.
The quality seems to be very good. The material's reasonably thick on the bib tights and on the jersey so they will do well in the autumn/winter. I haven't got time/inclination to chase round different stores for the larger bibs.