The death of David Hockney last month, at the age of 88, brought down the curtain on one of the most glorious careers in British art. What better way to pay tribute to the Yorkshire master's remarkable talent than by visiting the Serpentine Gallery to admire the typically colourful, spellbinding and ultimately uplifting exhibition of recent work that now serves as his swansong? Hockney is one of a number of well-established British artists being celebrated with a major show.