| 1 run | v Essex | Lord's Cricket Ground, St John's Wood | 2025 | tt15313 |
| 2 runs | v Sussex | Lord's Cricket Ground, St John's Wood | 2017 | tt6403 |
| 2 runs | v Kent | Spitfire Ground, St Lawrence, Canterbury | 2020 | tt8997 |
| 3 runs | v Kent | The Rose Bowl, Southampton | 2008 | tt1002 |
| 4 runs | v Somerset | Lord's Cricket Ground, St John's Wood | 2016 | tt5772 |
| 5 runs | v Hampshire | John Walker's Ground, Southgate | 2007 | tt657 |
| 5 runs | v Essex | Lord's Cricket Ground, St John's Wood | 2010 | tt1759 |
| 6 runs | v Kent | Uxbridge Cricket Club Ground, Uxbridge | 2008 | tt976 |
| 9 runs | v Gloucestershire | Brunton Memorial Ground, Radlett | 2019 | tt8050 |
| 9 runs | v Essex | The Cloudfm County Ground, Chelmsford | 2021 | tt9836 |
| 10 runs | v Hampshire | The Ageas Bowl, Southampton | 2022 | tt10837 |
| 11 runs | v Essex | The Ford County Ground, Chelmsford | 2010 | tt1869 |
| 11 runs | v Essex | Lord's Cricket Ground, St John's Wood | 2020 | tt8931 |
| 12 runs | v Lancashire | The Brit Oval, Kennington | 2008 | tt997 |
| 13 runs | v Kent | Lord's Cricket Ground, St John's Wood | 2010 | tt1795 |
| 16 runs | v Kent | Old Deer Park, Richmond | 2017 | tt6341 |
| 17 runs | v Essex | The Essex County Ground, Chelmsford | 2016 | tt5751 |
| 18 runs | v Hampshire | The Rose Bowl, Southampton | 2005 | tt170 |
| 19 runs | v Hampshire | Lord's Cricket Ground, St John's Wood | 2020 | tt8976 |
| 20 runs | v Kent | The Kent County Cricket Ground, Beckenham | 2005 | tt186 |
