Vicarage Drive Motte number 2
This low mound of earth lies to the South of Vicarage Drive. It consists of a low mound with trees to the West and South West. It is overlooked by slightly higher ground to the North West, so probably wouldn't be a good candidate for a motte and bailey castle.
Above. Motte number 1 looking West.
From this angle (above) the mound is quite visible against the tree line. There doesn't seem to be any sign of a bailey area, ditches or earthworks...though if there had been any of these features, they would most likely have been destroyed when the school was built.
The photo above shows how the mound is overlooked from the West. I don't think this is a very good candidate for a motte and bailey castle, or even any sort of 'pre-conquest administrative centre. Early maps of the area don't show any features in this area, named or otherwise, and local historical documents make no mention of a site at this end of town.