I can attest to this more than anything! Every Lexus dealer I have been to, whether in Coventry, Birmingham, or London, I have always been treated with extra care. I'd say on the UK end, my experiences surpass the few visits I have made to select Lexus dealers in Houston and ATL.
There are 1 or 2 Jaguar and Land Rover dealers I have been to in the past, where they weren't even aware I worked for the company at the time and made bad assumptions.