In the film Maggie Smith takes Bob Newhart shopping where she is seen trying on clothes and buying an outfit for £20 at the Apple Boutique on Baker Street, London, a boutique owned and operated by The Beatles. The boutique, which was the first venture of their Apple Corps Ltd company, and featured a large psychedelic mural on the external wall, was only operated for several months in 1968 before being closed down and the contents given away to the public for free. Hot Millions provides one of the few rare filmed glimpses of the boutique's interior.
The car driven by Bob Newhart is a Jensen Interceptor.