Trailer Happiness is a retro-California lounge in the Notting Hill section of London, opened by John Downey in 2003. Rather than a finding its inspiration in midcentury Polynesian restaurants, it aims for the feel of an American, kitch-heavy, basement rumpus room.

The tiki-heavy drink menu was developed with a helping hand from famed cocktailian Dale DeGroff.

They proclaim over 300 rums behind the bar.

On July 12th, 2021, the location was flooded, but since then, they've been able to deal with the damages and re-open.