Preview of upcoming programmes in HD from the BBC live sport, national events, landmark drama, world-class documentaries and more. The BBC as you have never experienced it before. [S] 1600 0600 Smash the System A student protest causes a rift between Mandy and Freya, leading Mandy to put herself in danger. Meanwhile, Julia's replacement ruffles feathers at The Mill. [AD,S] 1630 1600 2/5. Displaced Loyalties: Period drama series. Bea falls under the spell of an Italian POW, while Connie sings for the troops and flirts with a bashful piano player. [S] 1715 1630 7/10. Series about saving endangered wildlife and protecting vulnerable pets. Presenter Tom Heap joins the fight to save one of Britain's most endangered and dangerous reptiles. [S] 1800 1715 Dermot Murnaghan hosts the show in which teams from all over the UK take on probably the greatest quiz team in Britain, made up of some of the country's top quiz champions. [S] 1830 1800 19/20. Torquay: Torquay plays host to Paul Martin and experts Phillip Serrell and David Fletcher. Philip discovers a ship's brass plaque found off the coast of Torbay. [S] 1930 1830 South West Fish Chefs Paul Ainsworth, Nathan Outlaw and Simon Hulstone cook their fish course. Great British Menu veteran Tom Kerridge decides who goes through to the judges. [S] 2000 1930 2/12. More live wildlife stories with Chris Packham, Michaela Strachan and Martin Hughes-Games. Could pine martens be back in Wales even though they were thought to be extinct? [S] 2100 2000 4/6. A Delicate Balance: Documentary series. Following Great Ormond's intensive care and respiratory doctors as they deal with the difficult ethical decisions involved in complex cases. [AD,S] 2200 2100 3/16. Hoaxes: Stephen Fry asks unanswerable questions about hoaxes, with Sean Lock, David Mitchell, Danny Baker and Alan Davies. [S] 2230 2200 5/6. Sri Lanka to Bangladesh: This stage of Simon Reeve's journey takes him from Sri Lanka to Bangladesh. He starts in Sri Lanka, where Chinese money has helped end a 30-year war. [AD,S] 2330 2230 3/6. The Hidden History of Harbours: Coast ventures to the furthest flung reaches of the British Isles. In Newlyn, Nick Crane re-lives an unsung feat of British seamanship. [AD,S] 0030 2330 9/10. Hartlepool to Whitby: John Sergeant's journey continues. He searches for a missing rock formation in Hartlepool and visits the Victorian seaside resort of Saltburn-by-the Sea. [S,SL] 0100 0030 Preview of upcoming programmes in HD from the BBC live sport, national events, landmark drama, world-class documentaries and more. The BBC as you have never experienced it before. [S] 0600 0100 Preview of upcoming programmes in HD from the BBC live sport, national events, landmark drama, world-class documentaries and more. The BBC as you have never experienced it before. [S] 1600 0600