Punters claim Wetherspoons has become "too expensive" for drinkers after the large chain hiked the price of a pint at selected bars.
The price of a guest ale has increased from £3.39 to £4.39 - a steep 29 per cent - at 15 bars, all of which are in London.
Eddie Gershon, spokesman for the chain, said pubs in these areas have larger overheads than those outside the capital but believes Wetherspoons still offers "best value" in the market.
Customers shared their disappointment on Twitter, though, with some describing the chain as "expensive" despite its long association for cheap drinks and meals.
One man posted: "Just seen some Leeds fans, drinking at Victoria Station Wetherspoons. They've all got straws in one pint, as it's too expensive for a round."
Another added: "Its name is 'Wetherspoon'. But when you get there the beer is poor and expensive."
It emerged last month wine suppliers are set to pay 45 per cent to 70 per cent more for their glass bottles next year, as energy costs drive up their prices.
And Mr Gershon said Wetherspoon's decision reflects inflation and the cost of living crisis.
" We can confirm that prices have increased at 15 pubs in London, including The Ledger Building in Docklands," the spokesman continued.
"These are located in central London locations including The City.
"Central London and The City have higher overheads than our other pubs and as a result prices here are higher than in our other pubs across the UK.
He added: "Wetherspoon aims to be competitive on pricing at all times, however, on occasion, prices in its pubs do rise.
"We still believe that our prices for beers, spirits and wine are amongst the best value in their respective areas."
Former Chancellor Jeremy Hunt axed plan cuts to income taxes last month, Daily Star reports.
Plans to freeze alcohol duty rates were also scrapped after Hunt was parachuted into No11 to replace Kwasi Kwarteng.
