BBC Four HD Tuesday

Fred looks at early experiments in the use of steam for road transport, more than 100 years before the invention of the petrol engine

The Princess Matilda sails into Liverpool, but Tim has a difficult time reaching shore as he struggles to navigate around tankers and ferries

Hyacinth attends the christening of Daisy's granddaughter, and is upset to learn the child's mother is not married. Comedy, starring Patricia Routledge

Ria receives bad news when she meets up with Leonard after a mysterious phone call. First broadcast 10 December 1979

Gillian Pachter focuses on lead up to Ruth Ellis's execution, including attempts to save her and her last-minute admission of an accomplice

Examining how Muslim separatists in the Kosovo region rekindled old conflicts and Russian President Boris Yeltsin opposed Western intervention against their old allies

Journalist Jonathan Freedland examines the US presidency, and explores what qualities make a great American leader. Featuring contributions by James Naughtie and Douglas Hurd

Historian David Olusoga is joined in conversation by former American President Barack Obama to discuss his long-awaited memoir, A Promised Land

Friends and donors rally round as the museum faces a cash crisis, restrictions on visitors and exhibitions, a new roof to pay for, and an imminent election

The Princess Matilda sails into Liverpool, but Tim has a difficult time reaching shore as he struggles to navigate around tankers and ferries

Examining how Muslim separatists in the Kosovo region rekindled old conflicts and Russian President Boris Yeltsin opposed Western intervention against their old allies

Gillian Pachter focuses on lead up to Ruth Ellis's execution, including attempts to save her and her last-minute admission of an accomplice