This year's haul included video, installations, and photos but no paintings

MoMA’s $3 million cup of tea

French billionaire has recently sold works by Rothko, Warhol and Mondrian

The Art Newspaper requested full information

Purchased with funding from the Heritage Lottery Fund and National Arts Collection Fund

Serota discusses export laws and what is truly significant to public collections

A mysterious donor gives the Tate £12.5 million to buy Reynolds’ Omai but the Armouries fail to get Lottery support for two armours

An export licence deferral is now expected as the set of 19 watercolours sold to a Glasgow bookshop for a pittance in 2000 were sold to an overseas collector out from under the Tate

Objects sold by former owner

The California museum has bought the Duke of Northumberland’s “Madonna of the pinks” for $50 million

100 new contemporary objects on display

With £6m a year to raise, the budget of Tate Modern will require constant effort

Purchased from artist's family, it is the most important work still in private hands

The works are from the Oppé collection and Janet Wolfson de Botton

The successes and (rare) failures of a passionate collector

“It is impossible to say in advance when photography is an art and when it is not”

Austrian industrialist Joseph Froehlich is loaning major works of German and American art to the museum while Friends of the Tate contribute several new gifts

Berger collection to go to Huntington after two-year silence from the London museum

Installation of new glass gallery postponed for a year

Newly bought architectural albums on show

This ups the museums holdings of the artist to 22

Defending his acquisitions and looking to the future, Serita talks on exhibitions and an international outlook

We did not pursue any party political nonsense on the Museum Island': Professor Günther Schade stands by his position