Girlschool

Girlschool are a British heavy metal band originating out of the New Wave of British Heavy Metal scene in 1978 and frequently associated with contemporaries Motörhead. They are the longest running all-female rock band, still active after more than 30 years. Formed from a school band called Painted Lady, Girlschool enjoyed strong media exposure and commercial success in the UK in the early 1980s with three albums of 'punk-tinged metal' and a few singles, but rapidly lost their momentum in the following years.

source: Wikipedia