An auction of works by some of the UK art world's biggest names has raised more than £500,000 for the Glasgow School of Art's fundraising appeal.

The works by 25 leading artists, including Jenny Saville, Douglas Gordon, Alison Watt, Grayson Perry and others, used materials retrieved from the school's (GSA) Mackintosh Library, which was destroyed in a disastrous 2014 fire.

After the buyer's premium or additional charges has been discounted, the sale is estimated to have raised around £570,000 for the Mackintosh Campus Appeal.

The Ash to Art section of the sale, part of the Post War and Contemporary Art Day Sale, achieved a total of £706,438.

Sales were led by Jenny Saville’s Ashes which sold for £269,000.

Grayson Perry’s Art is dead, Long live Art sold for £27,500, while Antony Gormley’s SITE II sold for £43,750.

Anish Kapoor’s Untitled sold for £100,000 and Rachel Whiteread’s Mackintosh Charcoal sold for £10,625.

The artists were chosen by J Walter Thompson London, the ad agency, and the group included seven winners of the Turner Prize.

Each artist was sent a piece of material retrieved from the fire, with the organisers telling them what it was, where it was from and explaining the concept.

The brief was left for each artist to do with the debris what they wanted.

Kapoor's wood fragments were in a red perspex box, while Gordon's burnt wood was cast in bronze.

"We are delighted by the response to the auction," said Professor Tom Inns, director of the GSA.

"We would like to thank JWT for coming up with the idea and bringing it to such a successful fruition."

"Above all our thanks go to the artists who so generously supported The Glasgow School of Art by making these very special artworks.

"This brings to £19m the sum raised for the Mackintosh Campus Appeal and will help us with the ongoing restoration of the Mackintosh Building.”