Documentary which sheds new light on the greatest crisis to rock the British monarchy in centuries - the abdication of King Edward VIII. Usually, it has been presented as the only possible solution to his dilemma of having to choose between the throne and the woman he loved.

Dan Cruickshank's visits Windsor Castle, the largest inhabited castle in the world. Inextricably linked to the monarchy through the ages, the castle has also served as a lunatic asylum and a mausoleum

Michael Wood argues that the most important and influential British kings were a father, son and grandson who lived over a thousand years ago during the age of the Vikings.

King Alfred the Great fights a desperate guerrilla war in the marshes of Somerset - burning the cakes on the way - before his decisive victory at Edington.

In this second episode, Alfred's children continue the family plan to create a kingdom of all the English.

In this third episode, Alfred's grandson Aethelstan fulfils the family plan and creates a kingdom of all England.

For years, the royals kept details of some of their wealth secret. Dispatches reveals what they've kept under wraps - about who's paying them, and for what.

The story of the extraordinary rise to power of the man who runs Saudi Arabia and whose control of oil affects everyone, starting with how he outwitted hundreds of rivals to become crown prince

The story of how the crown prince of Saudi Arabia combined vision and ruthlessness to transform his country - and how he became one of the most powerful leaders in the world.

Simeon II was declared Tsar of Bulgaria at the age of six, but ousted and banished aged nine by the Communist dictatorship, only to return triumphantly 55 years later in 2001 as Prime Minister, in an unprecedented journey from boy king to democratic leader.

Power, money and influence - the monarchy is at the heart of our national life. David Dimbleby takes a personal look at its role and its future in a changing world.

With access to political players and royal insiders, broadcaster David Dimbleby asks: how much power does the monarch really have – and is it more than we tend to think?

Over the reign of Queen Elizabeth II, the Windsors amassed extraordinary private wealth without us noticing. How did they do it? David Dimbleby shines a light on the secrets of royal money.

In an episode featuring shocking scandals and startling interviews, David Dimbleby asks how far the royals will go to maintain public support – and can they succeed?