What is the average wage for a painter in wales?

i have recently started my painting business with my partner, but am unsure how much to charge customers. i a currently charging �120 a day(8 hours work,�60 each).This includes prep work.2 emulsion coats on ceiling and 2 on walls, and als glossing skirting.This is for an average10"x"10 room. Am i charging too little.Thanks