There's a wash and valet yard at the Uxbridge Road end of Grosvenor Rd (1st left past the lights heading W out of W.Ealing, at the Polski Schlep - now becoming a cafe and formerly Junk and Disorderly. The yard is just on the left, surrounded by railings). My son uses them and he is picky, says they are very good and good value.
Tony Sleep ● 5159d