This is the National Champion London plane tree for girth. The tree at Mottisfont Abbey is bigger, but that is a fusion of two trees as can be seen at old photos, when two trees grew near each other. The tree was probably planted in 1680 by Bishop Gunning and was also one of the first planted London plane trees in the United Kingdom.
With kind permission from David Alderman and Owen Johnson, Director and Registrar of the Tree Register of the British Isles.
The girth of the tree is 10.00 m measured at a height of 1.30 m (Aug 1, 2009, Jeroen Philippona). Its height is around 33.00 m (Aug 1, 2009, clinometer or tangent style (laser) hypsometer (e.g. Forestor Vertex), Jeroen Philippona). This tree was planted in 1680, which makes it exactly 333 years old (Jeroen Philippona, Jun 7, 2012).