| Andrew Nigel Halford | Director | 21 Jul 1997 | 22 Dec 1998 | British | 67 years |
| Anke Groth | Director | 16 Jun 2016 | 30 May 2018 | German | 56 years |
| Anthony David Cocker | Director | 3 Oct 2011 | 31 Jul 2017 | British | 67 years |
| Anthony Steven Ainsworth | Director | 2 Jul 2012 | 28 Jan 2016 | British | 58 years |
| Anthony Steven Ainsworth | Director | 15 Jun 2020 | 29 Mar 2023 | British | 58 years |
| Bernd Wagner | Director | 16 Jun 2016 | 31 Oct 2018 | German | 60 years |
| Brian Jefferson Tear | Director | 3 Oct 2011 | 12 Jun 2012 | British | 58 years |
| Christian Barr | Director | 16 Jul 2018 | 31 Jul 2023 | German | 55 years |
| Christopher Börger | Director | 31 Jul 2023 | 31 Jan 2025 | German | 50 years |
| Christopher James Lovatt | Director | 14 Sept 2017 | 31 Jan 2025 | British | 57 years |
| Christopher John Boon | Director | 21 Jul 1997 | 19 Mar 1999 | British | 80 years |
| Christopher Stephen Norbury | Director | 31 May 2023 | 31 Jan 2025 | British | 52 years |
| David Anthony Bird | Director | 3 Oct 2011 | 31 Jan 2017 | British | 60 years |
| David John Jackson | Secretary | 28 May 1999 | 1 Oct 2001 | British | - |
| Donald Leiper | Director | 16 May 2013 | 10 Nov 2016 | British | 62 years |
| East Midlands Electricity Directors Limited | Corporate Director | 17 Jul 1997 | 21 Jul 1997 | - | - |
| East Midlands Electricity Secretaries Limited | Corporate Director | 17 Jul 1997 | 21 Jul 1997 | - | - |
| East Midlands Electricity Secretaries Limited | Corporate Secretary | 17 Jul 1997 | 21 Jul 1997 | - | - |
| Fiona Scott Stark | Secretary | 11 Sept 2012 | 31 Dec 2016 | - | - |
| Graham John Bartlett | Director | 4 Jul 2007 | 30 Sept 2011 | British | 70 years |
| James Timothy Lightfoot | Director | 28 Jan 2016 | 8 Dec 2017 | British | 60 years |
| James William Jones | Secretary | 1 Oct 2001 | 31 Aug 2012 | British | - |
| Julie Viviene Dawes | Secretary | 21 Jul 1997 | 28 May 1999 | British | - |
| Michael David Lewis | Director | 26 Apr 2017 | 31 May 2023 | British | 59 years |
| Michael Lindsay Thomas | Director | 13 Dec 2007 | 30 Sept 2011 | British | 56 years |
| Michael Robert French | Director | 1 Nov 2018 | 31 Oct 2021 | German | 58 years |
| Nicholas Wenham Horler | Director | 1 Oct 2001 | 4 Jul 2007 | British | 67 years |
| Nigel Myers | Director | 1 May 2003 | 1 May 2003 | British | 69 years |
| Nigel Myers | Director | 1 May 2003 | 1 May 2003 | British | 69 years |
| Paul Golby | Director | 1 Oct 2001 | 16 Dec 2011 | British | 75 years |
| Powergen Directors Limited | Corporate Director | 22 Dec 1998 | 2 Oct 2001 | - | - |
| Powergen Secretaries Limited | Corporate Director | 22 Dec 1998 | 2 Oct 2001 | - | - |
| René Matthies | Director | 2 Jul 2012 | 31 May 2016 | German | 56 years |
| Sara Lyn Vaughan | Director | 10 Nov 2016 | 26 Nov 2020 | British | 62 years |
| Simon Leonard Christopher Richards | Director | 8 Apr 2002 | 30 Apr 2007 | British | 62 years |
| William Giles Russell Davies | Director | 1 Oct 2001 | 8 Apr 2002 | British | 76 years |