Secrets of Great British Castles

Dan goes behind the battlements of Dover Castle, where he descends into an underground lair to discover how a vast network of tunnels has been used to defend both the castle and the country for centuries.

Built by William the Conqueror, the Tower of London has been a military fortress, a palace, a royal mint, a prison, a zoo and a place of execution, a silent witness to some of the most momentous events in our history. Dan Jones reveals some of its secrets and tells the stories of the traitors, rebels and royalty who met their end inside its imposing walls.

Today Warwick Castle is a popular tourist attraction, but for centuries its walls echoed with the sounds of betrayal, bloodshed, murder and financial ruin. Dan Jones reveals the turbulent history which took place within the well-preserved walls of this imposing castle and the tales of the earls of Warwick who lived there.

Edinburgh's handsome hilltop bastion is Scotland's most popular paid tourist attraction, but it also packs some formidable defences.

Dan Jones explores the history of the Welsh capital's landmark, Cardiff Castle, and discovers more about the various incarnations over the centuries.

In medieval England, the North was ruled from York. Dan Jones explores the history of its castle, from the Viking Jorvik and the Normans, through the dark days of the anti-Jewish pogrom and the imprisonment of the Knights Templar, to one of its most colourful inmates - the legendary highwayman Dick Turpin.