David Hockney art turned into immersive experience
rtist's immersive experience has been three years in the making. David Hockney: Bigger & Closer (not smaller & further away) looks back at Hockney's 60-year career. 
BBC's Katie Razzall spoke with the 85-year-old as he put the finishing touches to his show at its new venue, Lightroom, in London's Kings Cross.