George revisits two stubborn romantics with their dreams of converting derelict military towers into unique homes. Artist Sarah McCombie has owned a Martello tower in Kent since 2004, and ex-army man Barrie Taylor became custodian of a Scottish castle tower in 2005. Previously, neither had gained planning permission, and George visits each project to see if Sarah and Barrie took on board his advice and turned their restoration dreams into a reality.