From 1 April 1999 to 31 March 2004, health services within the geographical area covered by Greater Glasgow were operated and managed by 4 NHS Trusts:
Each NHS Trust was a legal entity separate from Greater Glasgow NHS Board and each had its own Board, Chief Executive and senior officers. As such, each NHS Trust was responsible for operating the services within its remit and for managing the assets of the Trust, including land and property. From 1 April 2004 the existing 4 NHS Trusts became part of a single system of working within NHS Greater Glasgow and were therefore separate Divisions with fully delegated powers to act autonomously.
During 2002 the Lennox Castle Hospital site formed part of the assets of the Greater Glasgow Primary Care NHS Trust and in October 2002 the Chief Executive of the Primary Care Trust (at that time Mr Ian Reid) submitted a paper to the Greater Glasgow NHS Board (Board Paper 02/71) with recommendations for proposals relating to the site of the former Lennox Castle Hospital. The Minutes of the meeting of the Greater Glasgow NHS Board held on 22 October 2002 show Mr Ian Reid present at the meeting as (Acting) Chief Executive of the Greater Glasgow Primary Care Trust and Mr Tom Divers also present, in his capacity as Chief Executive of the NHS Board.
Celtic plc expressed interest in the site in 2004 when the site was under the control of the Greater Glasgow Primary Care Division and it was therefore the Primary Care Division (as distinct and separate from Greater Glasgow NHS Board) who were responsible for managing the negotiations with Celtic plc which subsequently resulted in the sale to Celtic plc of a portion of the Lennox Castle site known as the "upper site". The formal decision to sell this part of the site to Celtic plc was made by the Capital Planning Group of the Primary Care Division at its meeting held on 17 August 2005.
As the Greater Glasgow Primary Care Division had then become part of Greater Glasgow NHS Board, this meant that the final step in the process (ie the signing of legal documentation authorising the transaction) required to be signed by the Chief Executive of the NHS Board, Mr Tom Divers, on behalf of Scottish Ministers. The Minute of Agreement was signed by Mr Divers on 29 June 2006.