Underground Ernie is a 2006 British educational computer animated children's television series produced by Joella Productions for the BBC on both CBeebies and BBC Two, and sold internationally by BBC Worldwide. It is set in International Underground, a fictional worldwide underground railway network, based on the London Underground, and focuses on the everyday adventures of Ernie, a friendly underground supervisor, Millie, his multilingual colleague, and Mr. Rails, the lovable maintenance man. The locomotives under Ernie's watchful eye all have characters of their own. There is Bakerloo, Victoria, Circle, Jubilee and the twins, Hammersmith & City. From time to time they are joined by their friends from across the world including; Paris, Brooklyn, Moscow, Sydney and Osaka. The show is aimed at children between the ages of three and eight years old. The initial (one and only, so far) series had twenty six episodes, lasting twelve minutes each. In October 2005, the series was officially announced, with it premièring the following year. Its first showing on was on Monday 5 June 2006 on BBC Two at 9:00am. It later premiered on CBeebies till Christmas Day 2006. Creation Writer John Deery and musician Sid Rainey, formerly of the band Compulsion, formed a production company in 2000 by the name of Joella Productions. During a brainstorming session, Sid came up with the idea of a children's TV series based on the names of tube stations, which is how Underground Ernie was born. Premise The series is focused on the adventures of Ernie, the controller of International Underground. He works with his colleagues, computer expert Millie who loves all things international, and Mr Rails, the maintenance man who's been working at the railway for over 25 years. The trains have their own characters too. Bakerloo is the detective of the Underground, while Hammersmith and City are two fast and furious twins who love quizzes and banking. Victoria is the oldest and has seen it all. She acts as a grandmother figure to all the trains, offering a helping hand whenever they need guidance, and Circle is the hippy chick, who loves nature and animals, as well as helping her friends out. Jubilee is the youngest of the team, and he's gadget mad, as well as being very mischievous. Over the course of the series, they are joined by their friends from across the world, such as the snooty Paris, gentle giant Moscow and fun-loving