Top Inventors at Penlon Limited All Time
| Rank | Name | Patents |
|---|---|---|
| 1 | Basil R. Sugg | 4 |
| 2 | Clive Hahn | 2 |
| 3 | David Lindsay-Scott | 2 |
| #4 | Eileen Palayiwa | 2 |
| #5 | Paul John Tyrrell | 2 |
| #6 | Brian C. Jones | 1 |
| #7 | Brendan Smith | 1 |
| #8 | Cliff Kersey | 1 |
| #9 | David Martyn White | 1 |
| #10 | Iain Revell | 1 |
| #11 | James Montgomery | 1 |
| #12 | John Robert Coates | 1 |
| #13 | Malcolm K. Sykes | 1 |
| #14 | Ralph J. East | 1 |
| #15 | Roy K. Jackson | 1 |
| #16 | Thomas A. McGraghan | 1 |
| #17 | William L. Davies | 1 |
| #18 | Richard Eeles | 1 |
| #19 | Alan C. Green | 1 |