Found at Exbury Gardens in Hampshire and named "The Wiggly Tree", it's actually a London Plane, which is famous for its large size and longevity. It has enormous spreading branches which are sinuous and contorted, drooping to ground level, so it has been supported by lumps of wood and metal bands that are strapped around its branches. The huge main trunk is surrounded by four horizontal trunks that appear to have layered themselves. The bark is pale grey-green, smooth and exfoliating in some areas, or buff-brown and not exfoliating in other areas. It flakes in patches leaving a dappled surface. You can find it just off the main Glade in the Home Wood.
6 versions, the last two show larger views of this unusual tree, but I couldn't get all of it into one picture because of the surrounding shrubs.