To celebrate the opening of David Hockney at Tate Britain, this morning the gallery revealed the European premiere of one of Hockney's iPad paintings on outdoor screens across the UK. David Hockney said: ‘It is a very exciting moment to see this painting of my garden revealed for the first time in Europe, and on its biggest ever canvas. When I created this work I always imagined it would look rather good on a large scale, and I’m delighted that people from across the UK will see this picture come to life. I encourage everyone to keep calm and carry on drawing – and to come see my show at Tate Britain.’