Another UK newcomer:
www.redarmybet.com/en/betting
Offering horse racing. Odds looked around average, but I've seen worse. Decent range of deposit options and wagering requirements attached to their welcome bonus, although not great, weren't as bad as some I've come across recently. Their parent company seems to be a Maltese outfit called Viral (!) Interactive Limited, but that's as much as I know.
On closer inspection it looks as if their odds are the same as those of the TGP-powered sites, although they have their own UKGC licence.