<unk>  (TENYAS) was the NHS<unk>  service covering the urban areas of Middlesbrough, Stockton-on-Tees, York and Hull along with the rural areas of the<unk>  Dales and<unk>  Wolds. In total the organisation provided<unk>  cover for an area of the size of approximately . The service was formed on 1 April 1999, as a merger of the former Cleveland,<unk><unk>  and the<unk> ern half of Humberside<unk>  Services and had 37<unk>  stations within its operating area with the southern half of Humberside<unk>  Service being absorbed by Lincolnshire<unk>  Service. Resources were deployed from the two control rooms situated in Middlesbrough and at<unk>  headquarters in Skelton, York known as 'Fairfields'. This building was a purpose built<unk>  headquarters, commissioned by the previous incumbent service,<unk><unk><unk>  Service.
Tees, East and North Yorkshire Ambulance Service
Isle of Man Ambulance Service
SA Ambulance Service
London's Air Ambulance Charity
East of England Ambulance Service
Hampshire and Isle of Wight Air Ambulance
State Surgeon of Ireland
Civil Air Search and Rescue Association