Merry & Pippin ended up coming from a pet shop, after searching high and low for a local Roborovski breeder, I found out that one in Essex supplied a certain chain pet shop, and that was my best bet. I'd very much have preferred to have got them direct from a breeder, and since getting them and delving deeper into the UK hamster fancy I now know of many more hamster breeders and don't plan on going to a pet shop again.
Alfie came from a rescue of course
but I ticked pet shop in the poll for M&P.