On 7 October 2003 the UK holding company for AMS changed its registered name from Alenia Marconi Systems Limited to AMS Limited to comply with the agreements reached regarding use of the name "Marconi" following the sale of Marconi Electronic Systems by GEC (later Marconi plc). This name change was reflected in rebranding across the company, although the Italian holding company retained the name Alenia Marconi Systems SpA.
On 28 January 2005 BAE Systems and Finmeccanica announced the intention to dissolve their partnership in the AMS joint venture with AMS' UK and Italian operations taken over by the respective partners as arranged through the Eurosystems Transaction. On 3 May 2005 the Eurosystems Transaction was finalised: