Gareth Roberts

A meeting in a London bus with jewel thief Lady Christina takes a turn for the worse for the Doctor when the bus takes a detour to a desert-like planet, where the deadly Swarm awaits.

Producer Steve Broster takes a look back to 1983 and the celebration of Doctor Who's twentieth anniversary, including the production and transmission of 'The Five Doctors', the media interest and the BBC Enterprises' event at Longleat House. Featuring actors Peter Davison, Elisabeth Sladen, Nicholas Courtney, Mark Strickson, Janet Fielding, Carole Ann Ford, John Leeson, Richard Franklin and Caroline John, writer Terrance Dicks, director Peter Moffatt, visual effects designer Mike Kelt, new series writers Paul Cornell and Gareth Roberts, prominent fans Andrew Beech, Ian Levine, Richard Molesworth and James Goss. Presented by Colin Baker.

There's a new drink taking the world by storm - Bubbleshock! Everyone's drinking it. When Maria's dragged along to the factory tour by her new friend, Kelsey - a girl with an opinion on everything - she's plunged into the sinister world of Bubbleshock and the mysterious Mrs Wormwood. There's something terrible behind the hype - something Sarah Jane's interested in too...

After the Doctor drops Rose Tyler off in 1979 to see ABBA, he picks up a human in his TARDIS and tells them he needs their help.

In 2004 a documentary was commissioned by the BBC looking back at the Philip Hinchcliffe era of British Television Series Doctor Who and what made those years some of the most popular in the series history.