I've just Googled Brian May and James May to see if they are related in anyway. I watched 'Queen in Montreal' last night on Sky Arts. Once again I was struck by how much Brian May made me think of James May. So I decided to Google them to see if any family history is available on the Internet. All I found is that several other people have have the same idea. So I'm not the only person to see a strong similarity.
It would be very nice to see BBC TV conduct a "Who Do You Think You Are?" on them to see if they are linked - perhaps as remote cousins? Maybe.