| Company | Timeline | Status | |
| Bazalgette Tunnel Limited Director • Director | 19 Aug 2015←3 Years→30 Sep 2018 | Active | |
Thames Tideway Tunnel Limited Director • Independent Director | 1 May 2014←3 Years→24 Apr 2018 | Dissolved | |
| National Grid Electricity Transmission Plc Director • Company Director | 13 Jul 2007←3 Years→25 Mar 2011 | Active | |
| National Grid UK Limited Director • Company Director | 2 Jan 2007←4 Years→25 Mar 2011 | Active | |
| National Grid Plc Director • Company Director | 1 Jan 2007←4 Years→31 Mar 2011 | Active | |
| Ngrid Intellectual Property Limited Director • Company Director | 1 Feb 2005←2 Years 4 Months→19 Jun 2007 | Active | |
| Northern Gas Networks Limited Director • Company Director | 27 Aug 2004←9 Months→31 May 2005 | Active | |
| Southern Gas Networks Plc Director • Company Director | 27 Aug 2004←9 Months→1 Jun 2005 | Active | |
| Scotland Gas Networks Plc Director • Company Director | 27 Aug 2004←9 Months→1 Jun 2005 | Active | |
| Wales & West Utilities Limited Director • Company Director | 27 Aug 2004←9 Months→1 Jun 2005 | Active | |
