Background; Tommy and Peter were the last two of the six chimps that formed Twycross' first attempt at keeping more than 2/3 chimps together, they formed a group of six in the old 'Chimp colony' building. It seems Peter could not be integrated into the main group, and so these two have still been living together seperately from all the others in the new building since finally being moved over a couple of years(?) ago now.. Peter's new move was evidently made to allow this impasse to be broken. Despite talk about 'breeding recommendations' etc( or rather not in his case) I think both Peter and William may both be /are castrated males, so its irrelevant anyway? My guess is sending him to a place with two old females is the most likely recipe for success in integrating him with other chimps, rather than e.g. trying it somewhere like Monkeyworld.
Afaik at Twycross only Jambo and Kibale are entire males- though not 100% certain about Flynn and Jomar.. Presumably Jambo (and any others) will have been vasectomised to prevent him breeding, which will be the responsibility of 2nd ranker Kibale- who was originally brought in for this purpose, but the pure 'verus' females have gradually died off since his arrival so he hasn't had the chance yet..
Twycross are bridging the past and future with the current group- the smallest they have had for decades now. The remaining group as it is are mainly ageing hybrids. They evidently propose to add some younger purebred 'verus' females at some stage to rejuvenate the group and slowly transition it to West African chimps as more of the older ones die off.
I'm quite interested why the BBC picked up this particular 'news' story- a single chimp moving to another zoo- odd news item. Publicity for Twycross maybe but nothing new to see there with Peter's departure.