Garrowby Hill depicts the East Riding countryside combined with the vivid colors of Los Angeles, California, where Bradford-born Hockney had lived for many years shortly before painting the work.

Williams has donated the original – along with three Banksy pieces – to Sotheby’s for auction and Garrowby Hill is expected to fetch between £7.5m and £10m.

Works by René Magritte, Claude Monet and Pablo Picasso will also go under the hammer in various sales alongside works from the singer’s personal collection.

Three of Banksy’s most recognizable works, with an estimated combined value of £7-10million, will go up for sale at the Now Evening auction in March.

Pieces include Kissing Coppers, which was originally unveiled as a mural on the streets of Brighton.

The famous image first appeared outside the Prince Albert pub in the seaside town of East Sussex in 2004.

Following repeated acts of vandalism, the original mural was removed in 2014.

The Williams version of Kissing Coppers was made by Banksy in 2005 and its sale will mark the first time a Kissing Coppers on canvas will be offered on the secondary market.

The selection also includes a version of Girl With Balloon depicted on metal, worth an estimated £2-3million, the first of its kind to appear at auction.

The third Banksy sold by Williams, 48, is Vandalized Oils (Choppers), which depicts two helicopters disrupting a pastoral scene from the artist’s Vandalized Oils series, and is estimated to be priced between 2.5 and 3, £5 million.

As part of the modern and contemporary evening auction taking place on the same day, Magritte’s Empire of Lights is estimated at over £45 million.

The work was created in 1961 for Magritte’s close friend, Baroness Anne-Marie Gillion Crowet, daughter of Magritte’s patron, Belgian surrealist collector Pierre Crowet, and has remained in the family ever since.

Next to him are Monet’s Water Lilies, painted between 1914 and 1917, and Picasso’s Bust of a Woman Leaning on Her Back, painted in 1938 to trace the evolution of the artist’s relationship with his muse, Marie-Thérèse Walter, and the increasingly dominant presence of his new lover, Dora Maar. .

The auctions will take place at Sotheby’s in London on March 2, 2022 – with the Now Evening auction at 4pm and the Modern and Contemporary Evening auction at 5pm.