Update 11am: Air Ambulance remains on the scene but the Hereford Races Christmas Jumper Raceday is expected to go ahead as planned.

The Air Ambulance and West Mercia Police are currently in attendance at an incident on Hereford Racecourse.

The incident is the Grandstand Road side of the track. It is unclear at this stage whether this will affect the Christmas Jumper Day race meeting that is set to get underway in an hours time.

More soon.