The present fragmentary remains represent a three-storey keep and a strong curtain wall and ditch, flanked by round towers.

John Grey distinguished himself in the Scottish wars, and found himself in great favour with Edward III.

Together with William D'Eincourt,[5] the Lord Grey commanded all the knights of Derbyshire and Nottinghamshire in case of an invasion.

The castle remained in the hands of the Zouche family for two hundred years until they sold up and emigrated to Virginia in 1634.

In June 2007, Channel 4's Time Team programme carried out an archaeological dig around the castle.

A perfectly preserved gold noble of Henry V was found in the moat and is now displayed at Derby Museum and Art Gallery.