The surveyors' hatchets had a little less success last year, with Lovely Seat the only Marilyn casualty, being demoted just a few days after the April 2010 update sheet was published. Arnside Knott and Lambrigg Fell survived as Marilyns, Harter Fell failed to be promoted, and the highest point of Rhiw Gwraidd was identified. The Seager Hill summit was also pinned down, not by a survey but through diligent research on old OS maps by George Gradwell and Chris Crocker. Other surveys established the precise height of several summits on the borderline of various lists. Summary of findings below.
| Name | Height | Summit | Drop | Status | |
| 1D | Beinn a'Chleibh | 916.3 | NN25052560 | 141 | Still a Munro |
| 4B | The Fara | 911.4 | NN59828426 | 475 | Still a Corbett |
| 5 | Geal-charn | 917.1 | NN59647826 | 178 | Still a Munro |
| 17E | Beinn Talaidh | 761.7 | NM62543470 | 430 | Still not a Corbett |
| 30B | Tryfan | 917.5 | SH66415938 | 191 | Still a Furth Munro |
| 30B | Glyder Fawr | 1000.8 | SH64245795 | 645 | Now 1000m Marilyn |
| 30D | Cerrig-y-Ieirch | 511 | SH75884251 | 29.2 | Demoted Dewey |
| 31B | Rhiw Gwraidd | 442 | SO01606343 | 214 | New summit point |
| 34C | Harter Fell | 778.9 | NY45960932 | 149.2 | Still a SubMarilyn |
| 34D | Arnside Knott | 159.1 | SD45607748 | 150.8 | Still a Marilyn |
| 34D | Lambrigg Fell | 339.6 | SD58689418 | 158.6 | Still a Marilyn |
| 35A | Lovely Seat | 674.7 | SD87909504 | 149.1 | Now a SubMarilyn |
| 35A | Kisdon | 498.6 | SD89919985 | 184 | Still not a Dewey |
| 35A | Hand Lake | 499.6 | NY64720061 | 41 | Demoted Dewey |
| 35A | Linghaw | 498.8 | SD63769854 | 35.4 | Demoted Dewey |
| 35B | Calf Top | 609.58 | SD66448562 | 312 | 0.02m under 2000ft |
| 35B | Kirkby Fell | 546 | SD87356350 | 31.1 | New Dewey |
| 36 | Kinder Scout | 636.3 | SK08488755 | 496.6 | Top, drop confirmed |
| 38B | Seager Hill | 272 | SO61363895 | 164 | New summit point |
More details on these and other surveys are available in a series of detailed reports on the hill-bagging website at: www.hill-bagging.co.uk/surveys.php.
