Sadly in the UK, not sure about elsewhere, a lot of guinea pig breeders are setting themselves up as rescues too. It would be lovely to think that their intentions were entirely altruistic, but like Theresa...I simply don't believe this to be true.
We have one local breeder come "rescuer" who used to (possibly still does) supply the local pet chain store with guinea pigs, also bragged to me (of all people) that another pet store had promised to take as many guineas of one breed, that they could supply!
Isn't there a saying along the lines of ~ "You'll never be trusted not once it's been found...You run with the hare and you hunt with the hounds."
I wouldn't trust or deal with any rescuer that breeds. I haven't got the time of day for these people. Simply a waste of space in the animal welfare world in my opinion
Barbara