We take an in-depth tour of the Blake show and talk to Marc Glimcher about his vast new space in Chelsea and why galleries are becoming supersized. Produced in association with Bonhams, auctioneers since 1793.

Criminal investigation launched three years ago into Parisian dealers at La Biennale continues to diminish confidence in the event's integrity

Painting will be exhibited at Frieze Masters next month, after a "style of Botticelli" sleeper sold for over £6m at Zurich auction in June

Our pick of highlights from upcoming auctions and fairs

Sprawling exhibition marks Irish artist’s first with Almine Rech gallery

The event will be renamed The Open Art Fair and will launch in March next year

Steve Lazarides leaves Lazinc in Mayfair to pursue solo projects

Commercial galleries continue to expand in Manhattan despite steep real estate costs

Fair is benefitting from Indonesia's burgeoning economy as well as cancelled Singapore fairs

With 91% of shareholders in favour, the publicly traded auction house will officially go private after three decades on the New York Stock Exchange

Cosmoscow's public programme will explore 'the crisis of faith in expertise' in the art market

New commercial gallery shows—from Baroque blackness in Chicago to flying saucers in London

Timothy Sammons misled clients over sales of works by artists including Picasso

Trump's tariff of 15% on Chinese art that went into effect 1 September also applies to the antiquarian trade, further frustrating dealers and auction houses

Swiss-based owner of Art Basel sells majority stake in Delhi event as part of wider withdrawal from regional art fairs programme

A Performance Affair introduces new protocol to specify what is on offer and its secondary market development

Trade condemns the move and prepares for mayhem of no-deal Brexit

Sweeping demonstrations are putting people off buying art, but relations with the US are likely to have a greater long-term effect

Seats on boards offered by major museums are increasingly being used to serve the narrow agendas of the ultra-rich

Emily Mae Smith, Genesis Belanger, Claire Tabouret and Gabriel de la Mora join the Paris dealer's growing gallery network

Featured on the BBC's Fake or Fortune TV show, the sculptor's Tête qui regarde was badly repaired after it was felled by a family feline

Founder of Finkelstein Gallery aims to counter the low representation of women in the Australian art world

New 10% tax will come into force on 1 September and apply to all works originating from China, regardless of where they are imported from

Four women top the auction market for African art as collectors look to 'fill gaps in the market'

Auction house says such litigation is “routine in the US”, with deal expected to be completed by the end of the year

British art dealer sentenced to up to 12 years after pleading guilty to fraud and grand larceny in the New York State Supreme Court

A data study by Sotheby's Mei Moses reveals a 73% increase for work by women in repeat sales, while men lagged at 8%

Nahmad could face jail time after admitting two counts of assault against Georgia Barry

Sale to telecoms magnate Patrick Drahi looks set to go ahead as firm makes up for a loss in revenue through increased commissions and more efficient guarantees

The German-born gallerist and publisher was a key figure in the London art world for more than 30 years