| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TW Plc 1990 | TW Plc 1991 | TW Plc 1992 | TW Plc 1993 | TW Plc 1994 | TW Plc 1995 | TW Plc 1996 | TW Plc 1997 | TW Plc 1998 | TW Plc 1999 | TW Plc 2000 | TW Plc 2001 | TW Plc Dec 2001 | TW Plc Dec 2002 | RWE TW Plc Dec 2003 | RWE TW Plc Dec 2004 | RWE TW Plc Dec 2005 |
| 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TW Limited 2007 | TW Limited 2008 | TW Limited 2009 | TW Limited 2010 | TW Limited 2011 | TW Limited 2012 | TW Limited 2013 | TW Limited 2014 | TW Limited 2015 | TW Limited 2016 | TW Limited 2017 | TW Limited 2018 | TW Limited 2019 | TW Limited 2020 | TW Limited 2021 | TW Limited 2022 | TWUL2023 |