David Robertson, one of the authors, and John Fielding, one of the aerial photographers, talk about this recently published guide which explores the full range, from the footprints of people who lived here nearly one million years ago, prehistoric monuments, Roman forts, medieval churches and Nelson’s monument to 20th-century defensive sites.

Arrive 7:00pm for 7:30pm start.

(Please note date change from earlier advertised date – now Thursday 27th March)