After leaving government service in 1992, Welch served on the Board of Directors of a number of corporations, including MBDA-US, Verint Systems, Serco Group, Dynacs Military & Defense, Meggitt, and Wilcoxon Research.
Universal Music Group | Warner Music Group | Coxeter group | Volkswagen Group | Group of 77 | RTL Group | girl group | BT Group | ABB Group | Group One | Virgin Group | Thales Group | ING Group | group | Rio Tinto Group | Bloomsbury Group | Penguin Group | Carlsberg Group | Borders Group | Arup Group Limited | Benetton Group | Stagecoach Group | LMFAO (group) | Anschutz Entertainment Group | Tata Group | Rootes Group | Westfield Group | Group races | Group C | MTN Group |
On 23 March 2009 it was announced by the Department of Energy and Climate Change (DECC) that a consortium made up of Serco, Battelle and the University of Manchester had been selected as the new management contractors for the NNL.
On 7 June 2007, Metronet announced that the contract for operating and maintaining the test track had been awarded to Serco Assurance (formerly Serco Railtest), based at the Railway Technical Centre in Derby.
Serco Denholm is a joint venture between Serco Group and Denholm Group to provide Marine Services in support of the Naval Service at its three main naval bases, HMNB Portsmouth, HMNB Devonport and HMNB Clyde.