All the wholesalers Allmakes, Bearmach, Britpart sell ther own brand bearings but they are cheap Chinese & Indian origin. You won't find any country of origin on the packaging.
You are always best off sticking to the well known OEM bearing manufacturers, e.g. FAG, KOYO, NSK-RHP, NTN, SKF, TIMKEN. Most bearing applications are fairly critical and the well known brands are not that much more expensive than the cheap rubbish. The unbranded/own brand wheel bearing kits sell for around £9.75 to £13.00, you can get kits with Timken bearings for £19.00 and other OEM brands for slightly less. It's really not worth the small initial saving going for the unknown and then having to replace them again works out more expensive.