• A new room dedicated to the watercolours and drawings of painter JMW Turner has opened at the Tate Britain to mark the 250th anniversary of his birth. The new room at the Millbank gallery, whichfeatures some of the more than 100 works by Turner on display in the gallery, includes the earliest Turner in Tate’s collection, made when he was only 12-years-old, as well as a dramatic image of a building on fire, long thought to be the Houses of Parliament but now revealed to in fact be the Tower of London. The display draws on the latest research developed in preparing a new catalogue of Turner’s 37,500 works on paper which, to be completed this year, will be freely accessible on Tate’s website from November and offers a news insight into the artist’s ideas and methods. Further events related to Turner are planned for later this year. The new room can be seen daily. Entry is free. For more on how the Tate is marking the Turner anniversary, see tate.org.uk/turner-250.

• The stories of enslaved people – whose labour fuelled 19th century postal ships between the UK and the Caribbean – are explored in an exhibition at the Postal Museum in Clerkenwell. Voices of Resistance: Slavery and Post in the Caribbean draws on letters between plantation owners and managers to provide glimpses into the lives of enslaved people who worked on the plantations and celebrates their courageous acts of resistance. The display also features a movie by filmmaker Emmanual Phillips which honours the Caribbean coal workers involved in refuelling postal ships on the island of St Thomas (and which was created in partnership with Dollar fo’ Dollar, St Thomas-based organisation that works to ensure the legacies of the coal workers live on to inspire people). Entry is included in the museum ticket. Runs until 5th January. For more, see www.postalmuseum.org.

• On Now: The Power of Trees. This exhibition at Kew Garden’s Shirley Sherwood Gallery of Botanical Art celebrates trees and their use as a source of artistic inspiration across cultures and time. The display features a variety of botanical works including 20 newly commissioned botanical artworks created by the artists of the Bedgebury Florilegium Society and Horizontal – Vaakasuora, a spectacular cinematic installation from Finnish artist Eija-Liisa Ahtila. Entry is free with Kew Gardens admission. Runs until 14th September. For more, see www.kew.org.

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