I've seen several Provosts at various aerodromes in the last couple of years. Here's a snap I took at North Weald a couple of years back:
G-MOOS/XF690 Percival Provost T1 :: GMOOS_XF690.jpg :: Fotopic.Net
Most notable ones I ever saw were three Burmese Air Force ones at Croydon in 1958!