Shetty, 31, is an award-winning Bollywood actress

The chancellor said the issue had been raised repeatedly during his trip, adding that Britain should be "seen as a country of fairness and tolerance".

Prime Minister Tony Blair said: "We should oppose racism in all its forms."

The programme drew its third-largest audience of the series amid more than 21,000 complaints about housemates' treatment of Indian star Shilpa Shetty.

In other developments:

• A small-scale protest in the eastern Indian city of Patna saw the burning of an effigy
• Bollywood actress Shetty's family issued a statement saying they were "overwhelmed by the outpouring of public support"
• TV regulator Ofcom said it had received a record number of complaints for a television broadcast - over 19,300
• Bookmaker William Hill made Shetty favourite to win Celebrity Big Brother

Condemnation

During his visit to India, Mr Brown said he had heard about the volume of complaints regarding the reality show.

"I want Britain to be seen as a country of fairness and tolerance. Anything detracting from this I condemn."

HAVE YOUR SAY I think the whole thing has been blown completely out of proportion Donna, Essex Send us your comments How politicians got involved

Asked about the issue during prime minister's questions, Mr Blair said he could not comment on the Channel 4 reality show because he had not seen it.

A Downing Street spokesman later said that the UK response to the programme showed "there is no level of toleration in this country for anything which, rightly or wrongly, is perceived to be racist".

The Indian government is awaiting a report on the programme and could raise the matter with the UK.

Anand Sharma, India's junior minister for external affairs, said: "The government will take appropriate measures once it gets to know the full details. Racism has no place in civilised society."

Audience boost

The story featured on the front pages of several Indian newspapers on Wednesday.

Diplomats here in India say the row is damaging Britain's reputation BBC political editor Nick Robinson Read Nick's thoughts in full India reacts to UK TV row

Shilpa Shetty's family issued a statement saying they were "overwhelmed by the outpouring of public support for Shilpa not just in India, but from across the globe".

As well as approximately 19,300 complaints to Ofcom, a further 2,000 have been made directly to Channel 4.

Hertfordshire Police said two e-mail threats against housemates had been sent to Channel 4, but would not say if they related to the alleged racism.

Celebrity Big Brother's main highlights show averaged 4.5 million viewers on Tuesday evening, up from 3.5 million on Monday and 3.9 million on Tuesday last week.

Bookmaker William Hill, offering odds of 6/4 on Shetty to win the series, said: "She has stuck in there and if she now picks up the public sympathy vote, punters certainly believe she will be very hard to beat."

The only way there is going to be peace in the house is for everybody to show each other some respect Leo Sayer

Housemates Jade Goody, Danielle Lloyd and Jo O'Meara have been seen making fun of Shetty's accent.

On Monday night's episode, former S Club 7 star O'Meara reportedly suggested that Indians were thin because they were always ill as a result of undercooking their food.

The trio also complained that Shetty had touched other housemates' food with her hands.

"You don't know where those hands have been," said former beauty queen Lloyd.

'Absolutely absurd'

Leo Sayer, who left the house last week, said the alleged bullies were "all being very stupid, but I think basically they are good people".

"I wouldn't put them down as nasty people," the singer told Capital Radio.

He added: "The only way there is going to be peace in the house is for everybody at least to show each other some respect."

Goody, a late arrival in the house, has repeatedly argued with Shetty

A friend of Lloyd, Leeandra Anderson, said that the suggestion the housemate was racist was "absolutely absurd".

"I've known Danielle for five years now and not once has she had a racist undertone in her voice ever," she told BBC Radio Five Live.

A programme spokesman previously defended the decision to show the offending footage.