| Twenty20 Cup, 2003 | 2003 | Surrey | - |
| Twenty20 Cup (in England), 2004 | 2004 | Leics | - |
| Twenty20 Cup (in England), 2005 | 2005 | Somerset | - |
| Twenty20 Cup (in England), 2006 | 2006 | Leics | - |
| Twenty20 Cup (in England), 2007 | 2007 | Kent | - |
| Twenty20 Cup (in England), 2008 | 2008 | Middlesex | - |
| Twenty20 Cup (in England), 2009 | 2009 | Sussex | - |
| Friends Provident t20 (in England), 2010 | 2010 | Hampshire | - |
| Friends Life t20 (in England), 2011 | 2011 | Leics | - |
| Friends Life t20 (in England), 2012 | 2012 | Hampshire | - |
| Friends Life t20 (in England), 2013 | 2013 | Northants | - |
| NatWest t20 Blast (in England), 2014 | 2014 | Warwickshire | - |
| NatWest t20 Blast (in England), 2015 | 2015 | Lancashire | - |
| NatWest t20 Blast (in England), 2016 | 2016 | Northants | - |
| NatWest t20 Blast (in England), 2017 | 2017 | Notts | - |
| Vitality Blast (in England), 2018 | 2018 | Worcs | - |
| Vitality Blast (in England), 2019 | 2019 | Essex | - |
| Vitality Blast (in England), 2020 | 2020 | Notts | - |
| Vitality Blast (in England), 2021 | 2021 | Kent | - |
| Vitality Blast (in England), 2022 | 2022 | Hampshire | - |
| Vitality Blast (in England), 2023 | 2023 | Somerset | - |
| Vitality Blast (in England), 2024 | 2024 | Gloucs | - |