| From | United Kingdom 🇬🇧 |
| Gender | Male |
| Climbing | |
| Hardest Boulder (Worked) | 8A |
| Hardest Sport (Worked) | 9a+ |
| Hardest Trad (Worked) | E12 |
North York Moors enthusiast and latterly Llanberis slatehead. Cookson has ploughed his own furrow, initially on highball boulders and micro routes, more recently on the technicalities of the North Wales slate quarries.
| From | United Kingdom 🇬🇧 |
| Gender | Male |
| Climbing | |
| Hardest Boulder (Worked) | 8A |
| Hardest Sport (Worked) | 9a+ |
| Hardest Trad (Worked) | E12 |
North York Moors enthusiast and latterly Llanberis slatehead. Cookson has ploughed his own furrow, initially on highball boulders and micro routes, more recently on the technicalities of the North Wales slate quarries.