Chartjackers is a British documentary series, produced by Hat Trick Productions and commissioned by BBC Switch. It documents the lives of four teenage video bloggers over the course of ten weeks, as they attempt to write, record and release a pop song for charity, with the goal to "sell an estimated 25,000 singles to achieve their dream of a number one single". It premiered in the UK on 12 September 2009 on BBC Two, and ran for a single series of eleven weekly episodes. When first broadcast, the programme ran in real time: its first ten episodes documented the events of the previous seven days, while the final episode was an extended compilation that summarised all ten weeks.

Charlie McDonnell is a British filmmaker, screenwriter, musician, former vlogger, author and Twitch streamer from Bath, Somerset. On 15 June 2011, her YouTube channel charlieissocoollike became the first in the United Kingdom to reach one million subscribers.