I doubt you'll get a job unless you can drive. You could be a plumbers mate though. They normally just sit in the passenger seat. No idea what the wages are, but I suspect it isn't commensurate with the prices some plumbers try to charge.
I had a plumber here for 4 days doing various stuff and he charged me 2200, he put 2 new rads in, a new heated towel rail, new taps in the bathroom, a 900mm curved shower cubicle and shower and serviced the boiler. He also moved the stopcock and burried some old led pipes in the extension,