I'm from Clitheroe in Lancashire originally and thee and thou are still used by a lot of people around the area. As mentioned above the local dialect also uses a number of loan words from Old Norse (The area was settled by Norwegian rather than Danish Vikings way back when)I often used to hear "tha mun rive at it lad" (Tr You must pull very hard at it). Swedish food packets still say Riv on the tab where English ones would say pull.

I currently work in Swindon (Wiltshire) and don't hear Thee/thou forms at all around here.