BBC Four HD Wednesday

Jeremy Paxman presents the long-running academic quiz show, in which teams from Gonville and Caius College, Cambridge and the University of St Andrews compete in round one

Victoria Coren Mitchell presents a quiz show of patience and lateral thinking, with the Bankers doing battle with the Bookkeepers

Helen Czerski explores the science of temperature, beginning at the bottom of the scale with a look at how cold has shaped the world

Gillian Pachter continues her forensic look at the Ruth Ellis case by focusing on the trial, which took just a day and a half, and saw her lawyer pursue a risky defence strategy

Writer Roy Clarke tells the story of how his one-off drama A Foreign Field came to life and the part that Sir Alec Guinness played in getting the drama off the ground

Two British Second World War veterans travel to Normandy to reminisce about their days of battle. Comedy drama from 1993, with Alec Guinness and Leo McKern

Writer and broadcaster Stephen Smith explores the flamboyant court of French monarch Louis XIV at the Palace of Versailles

A profile of the woman hailed a heroine after caring for wounded soldiers during the Crimean War, going on to revolutionise modern nursing and reform healthcare at home and abroad

Helen Czerski explores the science of temperature, beginning at the bottom of the scale with a look at how cold has shaped the world

Gillian Pachter continues her forensic look at the Ruth Ellis case by focusing on the trial, which took just a day and a half, and saw her lawyer pursue a risky defence strategy