News: leading figures from London's design institutions have warned that new immigration rules which make it harder for international students to stay in the UK after graduation could be a "disaster" for the city.

Kieran Long, senior curator at the V&A museum, described London as "a crossroads for great creative people to come and learn from their peers," but warned: "Anything that stops that would be a disaster."

Design Museum director Deyan Sudjic said: "London has really based its success on having 150 years of great art schools. They have been somewhat industrialised, got too big, and the government has also got quite curious about allowing students to stay once they've graduated. We need to be an open city, that's what London always been."

The new rules also introduce the powerto refuse an application for a student visa extension where the applicant cannot speak English.

We want to retain the best talent and the new visa restrictions are not conducive to thatMax Fraser

"It would be a disaster for London," agreed Nigel Coates, professor emeritus at the Royal College of Art. "For creative people, London is the most attractive city in the world, partly because of its schools. But the government, confused as always, seems to be shooting itself - and us - in the foot."

"It's making it very, very difficult for AA students," said Sadie Morgan, president of the Architectural Association school. "They give huge amounts to the UK economy. It's a really big issue. It's damaging and short-sighted of the UK government. They're looking to be doing something