Around two square kilometres of moors are ablaze around Baitings Reservoir in Ripponden on the Yorkshire border with Lancashire.

It is not known what started the fire but the flames have been fanned by strong winds on the hills.

Ten fire engines from West Yorkshire and three from Greater Manchester are now in attendance.

A spokesman for Greater Manchester Fire and Rescue Service said there was no reports of injury to anyone or damage to property.

Fire chiefs described the incident as large scale and said there was a two-mile-long fire front along the side of the main A58 road between Lancashire and Yorkshire.

Crews are setting up fire-breaks to stop it spreading and a fire service officer will go up in the West Yorkshire Police helicopter to get an aerial view of the incident.

Smoke from the fire is being blown across a wide area below, mainly into Greater Manchester, including Rochdale and Oldham at the foot of the Pennines.