WTF was Richard Nixon doing in the UK in the 50’s?
Frolicking with a dog, obviously.
Looks more like the US, at the beginning of the biker culture, which was launched by returning soldiers on army motorcycles.
That emblem on the bike is for Matchless , a British motorcycle company. There isn’t much else to go off of from the image though.
Matchless - Wikipedia

@PugJesus

Looks like a wartime headlight. Maybe 40s?