Aled Jones visits north Wales to follow the pilgrim trail to Bardsey Island, reputed to be the resting place of 20,000 saints. And Kate Bottley is in Dublin to uncover the real St Valentine.

Josie d'Arby is down on the farm in Dartmoor, joining girls from inner-city London who are being given a taste of rural life. And the famous bells of Southwark Cathedral are hoisted back up their tower.