J is for... Jake

Jake Simmonds was a member of the Preachers, a rebel group who lived in the London of an alternative universe. In this universe, the streets under martial law, whilst the wealthy floated above them in their private airships. The Preachers were part of a global organisation which was monitoring the activities of a man named John Lumic, whose business was eating up companies across the planet. Jake abducted Mickey Smith to go on a mission, after mistaking him for his boyfriend Ricky Smith. He was shocked when Ricky then turned up their headquarters. The Doctor later discovered that Lumic was about to unleash a version of the Cybermen on this Earth. Jake helped rescue the Doctor and Rose, but later Ricky was killed trying to escape. Jake was initially antagonistic towards Mickey, wishing he had been killed instead, but the two came to accept each other and to work together. 

When it came time for the Doctor to return to our universe, Mickey elected to remain behind. He and Jake would travel through Europe looking for other Lumic factories where Cybermen were based.

Some time later the Doctor found himself captured by the Torchwood organisation, at the base in the Canary Wharf Tower. he was reunited with Mickey, who had travelled across dimensions as the Cybermen were breaking through from one Earth to another. Jake arrived soon after, with Pete Tyler - Rose's father from the parallel universe. They now worked for an alternative Torchwood, which had been battling the Cybermen until they vanished into the void between dimensions, to come to our Earth.

This coincided with the return of the Dalek group known as the Cult of Skaro, whose craft was held by Torchwood.

The Doctor defeated both Daleks and Cybermen by opening the void, sucking them all inside. However, this meant that Jake, Mickey and anyone else on the parallel Earth would no longer be able to cross the dimensions.

Played by: Andrew Hayden-Smith. Appearances: Rise of the Cybermen, The Age of Steel, Army of Ghosts, Doomsday (2006).

• Hayden-Smith began his acting career on children's TV series Byker Grove (which also begat Ant & Dec).