Hi Drew, I bought my RIR from Warboys Pet Supplies/Kennels/Cattery on Heath Road, Warboys, Cambridgeshire, between Chatteris and Huntingdon. The chap there rears a few different breeds as a sideline so I'm not sure if he will have any RIRs right now but they often know of other chickens available locally. Tel 01487 822787. Good luck!