It is the first time a speciality beer has won the top award. The beer is a 5% stout infused with vanilla and dark malts to create a smooth and dark beer.
Owner of the microbrewery Chris Bingham told OLN that it was already “struggling” to keep up with the interest after winning the top accolade.
The brewery distributes to both on and off trade and wholesale, although the Vanilla Stout is only available in a limited number of bottles currently.
Bingham added: “It will probably be September before we look at the bottling side. I am hoping the win will upsell everything.”
The brewery produces a range of beers including its top seller Twyford Tipple a 3.7% ABV bitter. It even boasts a 5% ABV Hot Dog Stout and 5% ABV Ginger Doodle Stout.
The brewery currently employs four staff with an extra person to help during the summer period.
Kent based Old Dairy brewery's Snow Top claimed the silver award while third in the competition was Tring brewery's Death or Glory.
Camra national director responsible for the Champion Beer of Britain Competition Nik Antona said: "Bingham's Vanilla Stout is packed full of comforting flavours and I'm sure it will be a popular Champion Beer Choice. It's great to see a speciality beer win the award for the first time in the history of the competition and our congratulations go to the brewery."