Parrot Tulips by Duncan Grant, estimate £10,000-15,000 at Roseberys.

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A successful solicitor, he was known as a fierce negotiator who represented clients across various fields from the entertainment industry and art sector to human rights, including the likes of Pink Floyd, Kate Bush and Damien Hirst.

His most important case was led against the British Government and concerned the Chagos Islanders exiled to Mauritius in 1971. This case went on for 10 years and the Court of Appeal found in Sheridan’s favour only days before his death.

In terms of his art collecting, he bought pictures by artists such as Duncan Grant, Wyndham Lewis and Dame Ethel Walker.

Grant still-life

Among the works from the consignment being offered at the saleroom in West Norwood, south London, is a still-life by Duncan Grant (British 1885-1978) titled Parrot Tulips.

The 22 x 15in (56 x 38cm) signed oil on board shows one of the artist’s own nudes in the background and was probably completed at his home in Charleston. It was originally exhibited at The Leicester Galleries and retains a label for the London dealer on the back. It is estimated at £10,000-15,000.


The Cow Jumped Over the Moon by Percy Wyndham Lewis, estimate £5000-8000 at Roseberys.

Also part of the collection is a work on paper by Percy Wyndham Lewis (1882-1957) estimated at £5000-8000. The Cow Jumped Over the Moon, a pastel, gouache and pencil on paper from 1948, is described in the catalogue as reminiscent of his earlier explorations in Futurism but also showing the absurdist streak often present in Lewis’ work at this time.

Signed, dated and measuring 15 x 15in (38 x 36cm), it featured at a 1956 exhibition at the Tate Gallery and was acquired by Sheridan from the New Grafton Gallery in London.