The Thames: Britain's Great River with Tony Robinson

Series telling the story of the architects, engineers and spin doctors who entered a frantic two year race to make the Royal Opening of St Pancras on time.

Dr Xand Van Tulleken and Raksha Dave investigate the Great Smog of 1952 - the deadliest environmental disaster ever recorded and one of the world's worst peacetime catastrophes. Lasting just over four days, the Great Smog plunged London into a terrifyingly murky gloom - the acrid pollution seeping into homes, leaving Londoners gasping for breath, shutting down transport and emergency services, and overwhelming hospitals and undertakers alike.

The RHS Chelsea Flower Show, formally known as the Great Spring Show, is a garden show held for five days in May by the Royal Horticultural Society (RHS) in the grounds of the Royal Hospital Chelsea in Chelsea, London. Held at Chelsea since 1912, it is the most famous flower and landscape gardens show in the United Kingdom, and perhaps in the world. The show is attended by members of the British Royal Family and attracts visitors from all continents. Highlights to the Chelsea Flower Show include the avant-garde show gardens designed by leading names with Floral Marquee at the centrepiece. The Show also features smaller gardens such as the Artisan and Urban Gardens.

Princess Diana was an icon who both captured and transformed the spirit of the times. Following how this thoroughly modern princess emerged from the bra-burning spirit of the 1970s and helped transform not just the Royal Family, but Britain itself.

Experts reveal what the royals are saying when they think nobody is listening.