An iron man statue is now watching over Oxford city centre, after being hoisted into position today.

The 6ft nude statue, the work of celebrated Angel of the North artist Antony Gormley, was raised on to the roof of Blackwell’s Art and Poster shop, in Broad Street, by about 20 workmen – despite a dispute over planning permission.

It emerged that the half-tonne iron artwork – commissioned by Oxford University’s Exeter College and worth more than £250,000 – does not yet have planning permission, and could have to be removed if councillors refuse consent.

Susanna Pressel, the Lord Mayor of Oxford, officially unveiled the statue at a ceremony attended by scores of onlookers.

She confirmed the statue had not got the necessary permission, but added: “It’s not unusual to apply for retrospective planning permission.

“The decision will be taken at the city council’s central, south and west area committee.

“If permission isn’t granted, it’s possible the statue might have to come down as early as April.

“As a rule, we’re very much opposed to retrospective planning permission.

“The reason it happened here is because the artist is about to go away for a long time – so it was a matter of having to do it here and now.”

Despite the confusion, those who turned out to witness the unveiling were generally appreciative of the artwork.

Mr Gormley, who began work on the statue nine months ago, said: “I’m not the best person to ask about planning permission. Somebody else is dealing with that.

“This was the only time available to do it, as I’m about to have a very busy year.”

But he added: “I’m very pleased with how it has been put together and he’s in very good company up there.

“There are some fine regal types on top of the Sheldonian, and various other statues there to keep him company.”

The Bursar of Exeter College, Eric Bennett, said: “He definitely draws the eye up and makes you realise how colourful the street is.”

The decision on whether to grant permission for the statue will be taken on March 10.

Ms Pressel said: “The decision will be taken by councillors on the committee, but we would like the public’s views.”