POLICE are becoming 'increasingly concerned' for the welfare of a missing teenage girl.

Olivia Duxbury, 15, has been missing from Nelson since July 22.

Officers said she is known to frequent Warrington, Preston and Fylde Coast.

She is described as white, 5ft 4ins in height, and of a medium build with shoulder length blonde hair and brown eyes.

She was last seen wearing a black top, black jeans and a khaki camouflage jacket.

Anyone with information regarding Olivia's whereabouts are asked to contact police quoting LC-20180722-1183