A fifth of Brits want restaurants to serve special 'fat jab menus' to cater for diners using weight-loss drugs, research has found.

More than one in four thought restaurants should serve smaller portions to help tackle obesity rates, according to the findings of a study by payment platform Lightspeed.

It comes as Otto's, the celebrity favourite in central London, began offering what was labelled the country's first 'fat jab' menu.

Priced at £350, the six-course 'small appetite' menu is for diners who no longer desire bigger portions because of weight-loss drugs.

Included in the French eatery's slimline menu are caviar, scallops, lobster, foie gras, truffle, veal, Bresse chicken and a coconut milk dessert.

Founder Otto Tepasse said the idea came after one regular diner complained restaurant portions were too large.

In a picture published by The Sun, the menu is titled: 'Small appetite menu a la Jeremy Clarkson.'

Mr Clarkson claimed to have lost three stone (19kg) in six months by using weight-loss jabs.

He revealed last week that he had been diagnosed with 'aggressive' prostate cancer in 2025 but was now in remission.

Otto Tepasse, who founded the restaurant in Gray's Inn Road, central London, in 2011, said: 'One of my customers is a billionaire many times over. He found he couldn't eat anything because of how big the portions are.

'So I created this menu to prove you can eat the best ingredients even while on Ozempic. The price is because the food is of such high quality.'

Supermarkets have also begun to cater more for customers on weight-loss jabs, with the Co-Op introducing a 'Good Fuel' range with smaller, high-protein dishes.

More than 1.5million Brits are estimated to be using weight-loss drugs, which limit appetite by making users feel fuller for longer.

Earlier this month the Daily Mail revealed a weight-loss pill would be approved for use in Britain, the first of its kind.

After the Mail reported the Wegovy Pill would be green-lit on June 4, it was approved a week later.

A tablet version of the highly-effective once-weekly Wegovy injection, the pill can now be prescribed to UK adults with obesity, who have a Body Mass Index (BMI) of 30 or above or who are overweight with a BMI between 27 and 30 and at least one weight-related comorbidity, according to the government.

Diners are increasingly looking for lighter dishes and smaller plates, according to hospitality experts.

Liam Crooks, managing director of EMEA hospitality at Lightspeed, said: 'Brits clearly aren't looking to give up eating out, but they are becoming more conscious about what and how much they're ordering.

'As weight-loss medications reportedly become more widely used, we're starting to see a shift in what some customers want from the restaurant experience.

'This isn't about completely reinventing menus, it's about offering greater flexibility, whether that's smaller portions, clearer calorie information or more choice for diners with different needs and appetites.'

Respondents from Leeds were most likely to support weight-management menus, with 38 per cent of those surveyed having a positive reaction.

It was followed by Brighton, where a third supported the menus, and Nottingham, where 31 per cent said the same.

More than a third of customers supported calories being shown on menus, which was also linked to the increased uptake of weight-loss medications.

Restaurants, cafes and takeaways have been required to display the number of calories in their dishes since 2022, when Boris Johnson's Conservative government introduced laws to 'level up the nation's health'.

At the time it was estimated that conditions caused by being overweight or obese cost the NHS £6.1billion per year.

Almost two thirds of adults in England are overweight or obese and 40 per cent of children leave primary school overweight or obese.