New author sheds light on 'opaque' art dealer market

Founding director has been searching for an African venue since she first established the event in London five years ago

Buyers using works as collateral and allegedly defaulting on payment becoming increasingly common in "frothy market"

Auction house says it has resolved questions over the provenance of Girl in the Foliage

Newport Street Gallery to present survey of Bali-based US artist

LD50 defends programme as promoting the “free exploration of ideas” while campaigners call for its closure

London institution will be at centre of newly rebranded Mayfair Art Weekend this summer

YBA is also considering using virtual reality to recreate Nazi’s ‘degenerate art’ show

Irish artist’s video installation of people fleeing war-torn countries is now on show at London's Barbican

“Godfather” of Pop is best-known in London for his Tottenham Court Road mosaics, which went back on show earlier this month

MCH Group aims to make it the “leading regional fair in Germany”

Sotheby’s is organising the non-selling show to coincide with its Surrealist sale

British artist is among five donors who are supporting undergraduates at Bard College Berlin

Paintings by American Psycho author and artist Alex Israel take on new political meaning in Gagosian show in London

MCH Group took a majority stake in the fair and now plans a digital overhaul

New Salon space will host selling exhibitions in collaboration with blue-chip galleries

Show at S|2 gallery in London is part of growing trend to revaluate and promote female artists

Work was precursor to painting that fuelled rumours of Surrealist’s sexual attraction to Ana María

Retrospective aims to reposition Swiss artist as master of clay and plaster–not just bronze

Brafa is honouring a living artist for the first time and has increased the number of contemporary galleries

Paddle8 announces it has an investor to lead buy back from parent company

Chairman of Contemporary Istanbul is lobbying the government for changes to tax on art

As the first public show of the work opens in the UK, the former Virgin partner says he is looking for an “appropriate recipient” for donation

Art dealer and other family members were accused of concealing paintings and properties worth hundreds of millions of euros

Filmmaker's personal collection will be on show, which includes works by Norman Rockwell, N.C. Wyeth and Robert Crumb

More than 80 leading artists and critics have called for museums and galleries to close on 20 January

Twelve artists have been commissioned to create works looking back on the present day from 4017<br> <br>

Dutch specialist decided against taking legal action over his Mayfair lease and left area after 40 years

Museum reopened less than two hours later as no threat found, police said