Engine coolant change - Bristol/Bath

Stephen_Leak

I really should have got this done last year before winter, or what passes for it these days, but inertia set in. I was hoping to see somewhere advertising this as a "footfall offer", but didn't. Does anyone know of anywhere that can do this relatively cheaply in/around the Bristol/Bath area? Yes, I know that I can do it myself, but it involves finding somewhere to do it so that the old coolant doesn't drain into my garage (its on a slope), and then raise the front of the car to remove the under-engine shield ...