Hi
As somebody living in the UkK I can see that this may appear to have influences of what would be regarded as American in its architecture, but then again this is what happens in the real world.
Fashion, styles etc. influence our thinking and I'm sure all those American movies of the thirties and forties shown on British cinemas at the time would have probably influenced architects and builders in the UK at that time.
The cinema in my home town, now long gone, was built in the Art Deco style and certainly would not have looked out of place along a main street anywhere in 1930/40's America.
So whilst I agree on the look being regarded as "Americanish" I also think this is not out of place in a UK setting.
As for the pumps and other items I think those would be fine
http://www.ruffordvillage.com/photos/rufford07.jpgAlan