Looking for the best and cheapest mobile ECU remapers. I'm based in Cumbria can anyone suggest?

imo you should try and go somewhere like r-tech, shark etc as they will check car first and you get before and after dyno runs no point mapping a car that could have issues

and for the money you get alot and peace of mind imo

people just sticking maps on with no pre checks or after logging are rubbish imo