Yorkshire Ambulance Service

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Yorkshire Ambulance Service NHS Trust
Area served by Yorkshire Ambulance Service NHS Trust
Type	NHS trust
Established	1 July 2006
Headquarters	Wakefield, England
Region served	East Riding of Yorkshire North Yorkshire (part) South Yorkshire West Yorkshire
NHS region	NHS England
Area size	6,000 sq miles
Population	5 million
Chair	Martin Havenhand [1]
Chief executive	Peter Reading (Interim) [1]
Website	www.yas.nhs.uk

Yorkshire Ambulance Service NHS Trust (YAS) is the NHS ambulance service covering most of Yorkshire in England. It is one of ten NHS Ambulance Trusts providing England with emergency medical services as part of the National Health Service it receives direct government funding for its role.

It was formed on 1 July 2006 following the mergers of the former West Yorkshire Metropolitan Ambulance Service ("WYMAS"), South Yorkshire Ambulance Service ("SYAS") and some services from the Tees, East and North Yorkshire Ambulance Service ("TENYAS").