We have quite a few around here. Prior to the pandemic all were run by the Polish and you could get a wash/dry for £6 or tenner with the interior hoovered and windows cleaned. Since the pandemic they have all been taken over by what I would say are”corner shop” owners, who have doubled the price and do a crap job!
I now go through an IMO/ARC car wash at my local Asda for a fiver, which includes the wheels manually pre washed by the operator.