During the later part of the 17th century John Harvey developed the site of the castle.

[1] In 1721 the remains of the castle, the house and the land was sold to James Brydges, 1st Duke of Chandos who developed an industrial centre in the town and demolished the last of the buildings.

[6][2] In 2008, during sewer renovation work, a section of the curtain wall of the castle and a tunnel used to transport goods from the port were discovered.

[10][11] The green figure of the memorial is allegorical,[12][page needed] representing "Civilization as a seated female, holding a globe in one hand and with the book of knowledge on her lap.

"[13] Number one on the southern side is a house of Flemish bond brick with a Roman tile roof.