A secret late night bar which could have some people thinking they've walked back in time and stepped into the 1940s has opened up underground in London.

Located in the trendy Soho area near Oxford Street, Cahoots offers visitors an immersive experience of what life might have been like in 1946, just after the end of World War Two.

The story behind the bar is that a former air raid shelter used by the public during the Blitz in London has been taken over by a collection of rogues and scoundrels who are out to enjoy some nocturnal fun.

However, rationing is still a part of everyday life in 1946 and so it is crucial for the people who run the bar to stay quiet as both food and alcoholic beverages are not easy to find.

Cahoots is the brainchild of Inception group founders, Charlie Gilkes and Duncan Stirling, who have previously set up themed bars like the 1980s-inspired Maggies in Chelsea and the speakeasy joint Barts in Knightsbridge.

Gilkes explained: "Cahoots imagines a disused air raid shelter post World War Two in an old tube station. A lot of tube stations in London were used as air raid shelters during the Second World War and it imagines that this tube station is no longer in service, but had been used as an air raid shelter for families and people to take cover during the Blitz.

"And we have a cheeky narrative as it were that a group of scoundrels have found this old tube station, used the air raid shelter and have set up a bar here."

When customers arrive at the bar they are greeted by actors dressed up in World War Two era finery, who speak and act much like people would have done in the 1940s.

Cahoots has a room shaped like a tube carriage and World War Two era furniture and signs adorn the bar itself. Visitors are also required to grab a ticket from the kiosk at the entrance.

For Gilkes, the germ of the idea came from identifying the growing popularity of immersive theatre where the audience both watches and actively plays a role in a theatrical production.

"I think there's a real trend in London and, well, globally now in immersive theatre. Obviously the speakeasy idea came to London five or six years ago. We actually opened Barts, which was the first, if not one of the first speakeasys in London and we saw that trend in the States. But now there's a real trend for immersive theatre.

"People used to eat, drink and then go to the theatre, they then started enjoying theatre while they were eating and drinking and now people actually want to be part of the theatre."

The menu boasts some unusual cocktails, including the Swing For Victory which mixes beetroot, vodka, rose and is garnished with an Oxo Cube. The aim was to recall some of the flavours of an allotment someone may have owned in the 1940s.

For customers hoping to sneak into Cahoots for a night of revelry it's just a question of tracking down the underground signs at Kingly Court and gaining entry to one of London's newest immersive bars.