Sir Paul McCartney has criticised Gordon Ramsay - calling the TV chef 'stupid'.  Ramsay, 41, has angered the ex-Beatle, 66, with his outspoken comments against vegetarians.

The foul-mouthed chef has annoyed the music legend by saying he could not tolerate it if one of his three daughters came home with a vegetarian boyfriend.

Kitchen Nightmares star Ramsay said recently: 'If one of my daughters' boyfriends turns out to be vegetarian I swear to God I'd never forgive them.'

On the attack: Sir Paul McCartney has taken issue with Gordon Ramsay's outspoken views on  vegetarianism

In another tirade, he said: 'My biggest nightmare would be if the kids ever came up to me and said "Dad, I'm a vegetarian". Then I would sit them on the fence and electrocute them.'

Sir Paul, who has not eaten meat for 30 years, told Sainsbury's Magazine: 'I think it's a case of live and let live.

'I will talk to people about the advantages of vegetarianism, and it will upset me if we've had a good conversation and they turn around and say something stupid.

'I just read a quote from Gordon Ramsay... "If my daughter ever grew up and married a vegetarian, I'd never forgive her."

'But even that I would forgive because it's not my affair, it's not up to me if he talks stupid or not.'

The music legend, whose youngest daughter Beatrice, four, is vegan, said: 'I'd be happier if everyone was vegetarian. The planet would be better off for it.'

He said of the nation's changing eating habits: 'We pretty much used to eat whatever we were provided with, and there were no ingredients on the packet.

'One of the first things I do, like most people now, is to look at the ingredients.

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'My youngest daughter is vegan, so I'm often looking for vegan food and I need to know if there's any dairy products... It's a good thing, you do it for the right reasons.'

Sir Paul, who is preparing to relaunch his late wife Linda McCartney's vegetarian range, has penned letters to Prime Minister Gordon Brown about the issue of meat-eating.

He said just before the end of the interview: 'If you do see Gordon... tell him he's a lovely boy.'

In Ramsay's Channel 4 show The F Word, the chef persuaded 50 vegetarians to feast on Janet Street-Porter's recently butchered veal.

In July, outraged animal welfare groups accused Ramsay of employing shock tactics to gain publicity after he was seen on the show killing and eating puffins.

In another outburst against vegetarians, Ramsay told Girls Aloud star Cheryl Cole when she appeared on the show: 'Didn't you get the message? Vegetarians aren't welcome here.'

Sir Paul's comments come after Ramsay was toppled by former protege Marcus Wareing from his place as the king of the London restaurant scene.

Petrus - where Wareing is head chef - overtook Ramsay's Chelsea establishment to win the accolade of the capital's finest top-end restaurant yesterday.

•  The full interview features in the October issue of Sainsbury's Magazine.