Communications Advisory Service Ltd (CAS) is an independent IT & Telecommunications consultancy company, founded in 1980. Using the 25+ years experience in consultancy gained in the UK, along with the international experience of its consultants, CAS has increased its worldwide presence from the UK to include the US and Canada, covering the following market sectors.CAS adheres to both the Communications Management Association (CMA) Code of Conduct.The principles have been accepted by the Office of Government Commerce to the extent that CAS is a Buying Solutions Catalist listed consultancy and is the preferred supplier for a number of NHS Trusts and PCT's.Buying Solutions is an Executive Agency of the Office of Government Commerce in HM Treasury.