Expanded 20th-century art week in US will swallow up London auctions; Sotheby's has yet to make a decision about its New York spring sales

Auction house has closed New York saleroom along with other offices—Sotheby's follows suit while Phillips has postponed all events and sales until mid-May

The firm is also rolling its London June sales into one week for the first time in more than a decade

Our pick of highlights from the next week's auctions and fairs

The Bushfire Relief Auction in Melbourne has been organised by the collectors Sandra Powell and Andrew King and prices start at £200

Auction results this week are expected to be down by almost a quarter signalling a "low tide" in London

Brexit casts a shadow over consignments in London, but young American female painters add some pizazz

Auction house fields a steady contemporary evening sale in London

Former jewellery specialist, who joined the firm in 1988, will be replaced by Bruno Vinciguerra, who will also continue in his role as executive chairman

Our pick of highlights from the next fortnight's fairs and auctions

Impressionist, Modern and Surrealist art auction last night made £106.8m, 35% down on last year—but with three works sold for over £10m

“No fireworks” at last night's Impressionist, Modern and Surrealist art auction that featured three restituted works

Our pick of highlights from this week's fairs and auctions around the world

The artist’s trademark motifs make his work easily recognisable and desirable—but there is more to this Surrealist than apples and bowler hats

He chronicled the African American experience when white male abstraction ruled. Now record prices for his work are frequently reset

Work will be offered without guarantee from the collection of the late Modernist composer Giancinto Scelsi

Christie's also holds its own at an auction of American furniture and folk art

Our pick of the highlights from this week's fairs and auctions

Current bid for re-imagined image of the controversial party leader stands at €45,000 in online auction

Our pick of highlights from this week's auctions

Softer YBA market faces test as collection amassed by London bond trader goes under the hammer at Phillips next month

Two paintings by Signac and one by Pissarro are expected to fetch as much as £20m

Unseen for 25 years, they all come from a very private American collector

Faced with economic uncertainty, turmoil in Hong Kong, Brexit and a shrinking auction market, the art trade has some justifiable anxiety about the coming year

We look back at the biggest art sales of the year, which reveal a concentration on New York over London and a continued dominance of 20th century male artists

One painting was hidden in a Parma cellar, leading to the discovery of the Tanzi Treasure

While her role grows to cover departments such as Old Masters, second global division will include luxury objects and decorative art, jewellery and wine

We look back at the stories that have overturned the art world order this year

Our pick of highlights from the next fortnight's auctions and fairs

December auction generates less than half the total of last year's sale, with several lots failing to sell