Battle of Battersea Power Station

The Battle of Battersea Power Station was a major battle between the Cybermen of Pete's World and the resistance group known as the Preachers as well as the Tenth Doctor and his companions.

It ended when the Doctor shutdown the Emotional inhibitor of all the Cybermen, causing them to explode. The Cyber-Controler fell into the exploding power station, (TV: The Age of Steel) while the remaining Cybermen were then sealed in the factories. (TV: Doomsday) It would serve as the first major conflict of a war that would finally end at the Battle of Canary Wharf in the Doctor's world. (TV: Army of Ghosts / Doomsday)

Origins
In the parallel universe known as Pete's World, John Lumic became obsessed with immortality and thus began creating the Cybermen with the plan to eventually transform himself into one. A small resistance group known as the Preachers led by Ricky Smith rose up to combat him and his efforts while Pete Tyler acted as a loyal friend to Lumic but in reality recognised his insanity and sent information to the Preachers under the alias Gemini, believing them to be security forces. In order to create more Cybermen, Lumic would trick homeless people desperate for food into getting into lorries and then kidnap them to be Cyber-converted as they wouldn't be missed.

Lead up to the battle
After the president refused to fund his work, Lumic intistee his plans for a war footing, using the pre built Cybermen to assassinate the president at Jackie's birthday party. (TV: Rise of the Cybermen) Once done, he had the ear pieces activated to control the residents of London to go to the power station to await conversion. However, unbeknownst to him, the Tenth Doctor, Pete Tyler, Rose Tyler and the Preachers had evaded capture as the Doctor successfully destroyed the group of Cybermen that pursued them with a TARDIS circuit. A further group in the main city attempted to capture them but only succeeded in killing Ricky Smith with their electroc hands, unable to reach Mickey Smith. (TV: The Age of Steel)

The remaining group eventually reunited across from the power station, the Doctor having worked out that was were Lumic's transmitter was located. They decided to attack on three fronts: Mickey and Jake would infiltrate the Zepplin and shut down the transmitter, Rose and Pete would use fake ear pods to join the crowd of people lining up for an upgrade in the hopes of finding Jackie while the Doctor and Mrs Moore would sneak in under the factory where all the Cybermen in status were kept. (TV: The Age of Steel)

Meanwhile Crane, Lumic's right hand man, refused to comply with Lumic's desire for a world of Cybermen. Ensuring he would be grought to Lumic, he used their friendship to enable him to get close enough to Lumic to severely damage his life support. However, the Cybermen deleted him for doing so. Understanding Lumic was close to death, the Cybermen sped up his conversion and forced him to the chambers despite his protests. (TV: The Age of Steel)

Breaking in
The Doctor and Moore managed to reach the inside of the factory, narrowly avoiding the awakened Cybermen. While searching the base, they found a Cyberman, Moore disabling it with an EMP. Upon inspecting the disabled Cyberman, the Doctor worked out thst destroying the emotional inhibitor was the way to defeat them, though it would kill all the humans inside as well. However, Moore was killed by another Cyberman, the Doctor being captured as his Binary vascular system made him worthy of inspection by Lumic, now upgraded as the Cyber-Controller.

Meanwhile, Rose and Pete made it deep into the station only for Pete to be recognised by one Cyberman, who claimed she was the converted Jackie Tyler. The revelation surprised the pair enough they displayed emotion, being taken away to the Cyber-Controller also. Elsewhere, Mickey and Jake knocked out the guards guarding the Zepplin (as Mickey was against shooting them) and found the transmitter in the control deck of the Zepplin. However, they struggled to disable it, eventually using a Cyberman who activated to protect the room to punch it for them, disabling it while also destroying the Cyberman. As such, the humans below realised where they were and fled, the sheer numbers being too much for the Cybermen to stop. Mickey then hacked into the station's cameras, enabling him to see Pete, Rose and the Doctor being confronted by the newly converted Cyber-Controller. (TV: The Age of Steel)