Great British Railway Journeys, BBC2, 6.30pm

MICHAEL Portillo is embarking on another railway journey armed with his early 20th-century guide. This time, he’s recreating a royal tour made by King George V,

which took the monarch through Britain’s industrial heartland. Portillo learns about the excitement that surrounded the monarch’s arrival and the reception that was laid on for the royal party in the parlour of Warrington’s town hall. From there, it’s on to Huyton and the seat of the Stanley family, Knowsley Hall, where the 19th Earl of Derby takes Michael on a tour behind the scenes.

Teachers Training to Kill, C4, 9pm
WHAT is the answer to the problem of school shootings in America? While some have argued for stronger gun control, others believe one possible solution is to arm teachers. This documentary explores the deeply divisive debate by following a group of educators who have signed up for a controversial summer school camp, where teachers are trained to use guns and deal with potential shooting scenarios.

Inside Europe: 10 Years of Turmoil, BBC2, 9pm
EUROPE’S leaders and their advisers reveal how the near bankruptcy of Greece threatened the euro itself. The story begins when the Greek Prime Minister George Papandreou takes office and discovers the disastrous state of his country’s finances, and while French president Nicolas Sarkozy is quick to grasp the danger that Greece poses to the stability of the EU currency, German chancellor Angela Merkel is slow to move.

Silent Witness, BBC1, 9pm
NIKKI is humiliated in court when a barrister accuses her of making a serious error in the case of a policeman who may or may not have been murdered. Meanwhile, the Lintern team investigates the death of a medical researcher whose body was found in a canal with mysterious puncture marks on it. Long-running crime drama starring David Caves, Emilia Fox, Richard Lintern and Liz Carr, with Art Malik and Dervla Kirwan.