← BackDonor league · 26
| # | Donor | Donations | Total given | First → last |
|---|
| 1 | Mitcham and Morden Labour Halls Limited | 4 | £30,000 | 2023-03-02 → 2025-11-11 |
| 2 | Ms Siobhain McDonagh | 4 | £17,500 | 2011-09-25 → 2019-12-17 |
| 3 | Communication Workers Union (CWU) | 1 | £10,000 | 2004-03-31 |
| 4 | Cappagh Contractors Construction (London) Limited | 1 | £10,000 | 2026-02-10 |
| 5 | Merton Labour Group | 2 | £9,882 | 2026-02-12 → 2026-02-21 |
| 6 | Ms Margaret McDonagh | 2 | £9,000 | 2021-12-14 → 2023-01-23 |
| 7 | Siobhain McDonagh MP | 6 | £5,100 | 2002-06-29 → 2007-06-29 |
| 8 | Sovereign Strategy Limited | 1 | £5,000 | 2022-01-17 |
| 9 | Harris Ventures Limited | 1 | £5,000 | 2024-05-30 |
| 10 | GMB | 2 | £5,000 | 2001-05-31 → 2017-05-01 |
| 11 | Union of Shop Distributive and Allied Workers | 4 | £4,700 | 2006-04-25 → 2017-05-01 |
| 12 | Union of Shop, Distributive and Allied Workers | 2 | £4,000 | 2014-03-03 → 2019-10-01 |
| 13 | Ms Sheila Knight | 1 | £3,721 | 2019-09-12 |
| 14 | Lord Waheed Alli | 1 | £3,000 | 2018-11-21 |
| 15 | Mr Anthony Colman | 1 | £3,000 | 2017-05-30 |
| 16 | Stefanos Stefanou | 1 | £3,000 | 2008-07-22 |
| 17 | Argo Capital Management Limited | 1 | £3,000 | 2025-11-17 |
| 18 | Adeline Xenakis | 1 | £3,000 | 2008-07-22 |
| 19 | BM Creative Management | 1 | £2,000 | 2017-04-27 |
| 20 | Union of Shop, Distributive and Allied Workers (USDAW) | 1 | £2,000 | 2024-05-16 |
| 21 | Charlie Parsons Creative Limited | 1 | £2,000 | 2019-10-20 |
| 22 | Mr Andrew Judge | 2 | £1,416 | 2007-09-29 → 2007-12-31 |
| 23 | Ms Siobhain McDonagh MP | 1 | £1,350 | 2006-09-29 |
| 24 | Stephen Alambritas | 1 | £1,150 | 2009-12-31 |
| 25 | Mr Mark Allison | 1 | £1,029 | 2007-12-31 |
| 26 | Co-operative Party | 1 | £600 | 2014-11-04 |
