Locals fought for almost three years to save the pub after it was closed and facing redevelopment in to flats.
A spokesperson from the East London and City CAMRA branch said: “Pub of the Year award nominations come from our 1,600 members. Branch members voted the Chesham Arms as the overall winner. It’s a great result having only traded for six months and for a pub that was described as unviable.
“The community campaign to save it was well-documented and what happened next shows what many of us have grasped for some time - it’s the publican that really makes the pub.”
Pub protection officer James Watson added: “It’s really down to the licensee Joe Gooding. It’s chalk and cheese when you compare it to how the pub used to be. It was stuck in a time warp serving boring bland beers - now it’s a warm, welcoming pub showcasing the best contemporary British real ales. They can take in one evening what the pub previously took in a week.
“The support from locals has also been tremendous.”
Supporters of the pub, had just two months to transform the 150-year-old building - which was being used as office space - back into a community boozer. Developer Mukund Patel granted local Andy Bird a 15-year lease.
The Chesham Arms was one of the first pubs in the UK to be protected with an Article 4 Direction as part of the campaign to save it, which means developers have to apply for planning permission before they can change the use of a building.