Helped by contributors including Shirley Williams, Douglas Hurd and Simon Hoggart, journalist Jonathan Freedland attempts to define the qualities which make a great US president.

Novelist Andrew Martin presents a documentary examining how the train came to shape the work of writers and film-makers, from Wordsworth and Dickens to The Railway Children.

Documentary that tells the surprising story of how Britain entered a new age of steam railways after the Second World War and why it quickly came to an end.

To mark 100 years of romance publishers Mills and Boon, literary novelist Stella Duffy takes on the challenge of writing for them, a task that ends up being harder than it looks.

Don Manley reveals the tricks that compilers use to bamboozle and entertain cryptic crossword solvers, while fans including Prunella Scales explain why they enjoy them.

Documentary which celebrates Britain's tradition of comic songs, from Noel Coward's Mad Dogs and Englishmen to Benny Hill's Ernie, and reveals the skill involved in creating them.

Journalist John Harris travels around England to find out why the north-south divide is still an economic reality following the decline of industry, and if it can be closed.