Couple have fun at the Tate Britain
Jude, 37, and Sienna, 28, are thought to have rekindled their romance just before Christmas.
They were photographed on holiday in the Caribbean over the festive period.
They called off their engagement in 2005 after Jude had an affair with his children’s nanny.
SEE PICTURES Sienna Miller and Balthazar Getty‘s Malibu lunch>>