It is a game traditionally played by groups of middle-aged women over a glass of wine.

However, bingo has started to attract a new crowd of young players introduced to the game by hipster clubs offering vegan food and cocktails.

Most pastimes with falling participation rates - more than 1,200 bingo halls have closed since the 1980s - would welcome a new generation adopting the game for their nights out.

But bingo loyalists are not keen on the most memorable aspect of the game - the nicknames for numbers as they are called out - being replaced with modern slang.

A leading figure in the business has warned that lewd jokes and calls about social media sites used to attract millennials do not go down well with the traditional crowd.

Events aimed at students are rife with "vulgar" and "offensive" gags, such as references to oral sex when calling the number 69, says Miles Baron, the CEO of The Bingo Association and the National Bingo Game.

Some venues, such as Dabbers Social Bingo in the City of London, have replaced their calls with millennial-friendly versions - such '14 - Insta hipster scene', '48 - Not another Brexit debate' and '56 - Scrolling through the ex's pics'.