This database makes passing reference to many different types of UK hills. This page lists them all in alphabetical order and provides a description for each of the classifications. There is a mixture of official DoBIH classifications (like Hewitts and Nuttalls) and some of my own, typically associated with National Parks or other walking areas (like PDT and YDNP).
| Code | Classification | Description |
|---|---|---|
| 0 | 0-99m TUMP | The TUMPs (Thirty & Upward Metre Prominences) comprise all British hills with 30m or more of drop, with no minimum height. The 0 category of TUMPs include hills up to 99m in height. The higher TUMPs are included on other lists such as Deweys. |
| 1 | 100-199m TUMP | The TUMPs (Thirty & Upward Metre Prominences) comprise all British hills with 30m or more of drop, with no minimum height. The 1 category of TUMPs include hills between 100m-199m in height. The higher TUMPs are included on other lists such as Deweys. |
| 2 | 200-299m TUMP | The TUMPs (Thirty & Upward Metre Prominences) comprise all British hills with 30m or more of drop, with no minimum height. The 2 category of TUMPs include hills between 200m-299m in height. The higher TUMPs are included on other lists such as Deweys. |
| 3 | 300-399m TUMP | The TUMPs (Thirty & Upward Metre Prominences) comprise all British hills with 30m or more of drop, with no minimum height. The 3 category of TUMPs include hills between 300m-399m in height. The higher TUMPs are included on other lists such as Deweys. |
| 4 | 400-499m TUMP | The TUMPs (Thirty & Upward Metre Prominences) comprise all British hills with 30m or more of drop, with no minimum height. The 4 category of TUMPs include hills between 400m-499m in height. The higher TUMPs are included on other lists such as Deweys. |
| 5 | Dodd | A Dodd is a hill between 500m-599m in height with a drop of at least 30 metres all round. The name Dodds was originally derived from DOnald Deweys, Deweys and Scotland. (Dodds appear as Class=5 on this website). |
| A | Arderin | An Arderin is a hill in Ireland (including Northern Ireland and the Republic) of 500m or over with a drop of at least 30m on all sides. |
| B | Birkett | The Birketts are all the Lake District hills over 1,000ft as listed in Bill Birkett's book 'Complete Lakeland Fells'. |
| Bg | Bridge | Published by George Bridge in 1973 (no longer maintained) |
| Bin | Binnion | Irish hills between 0-400m in height with a minimum drop of 100m. |
| BL | Buxton & Lewis | A list of hills of at least 2000ft in height, published by Buxton & Lewis in 1986 but no longer maintained. |
| Bow | Bowland Fells Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the Bowland Fells AONB |
| C | Corbett | A Corbett is a Scottish hill between 2500-2999ft in height with a drop of at least 500ft (152.4m) on all sides. They are named after the list's original compiler, J.Rooke Corbett. The Corbetts are a subset of the Marilyns. |
| Ca | Carn | Irish hills between 400-499m in height with a minimum drop of 30m. |
| Cm | Clem | The Clems, originally called the Yeamans are hills with a minimum drop of 100m or at least 5km (walking distance) from any higher point on neighbouring hills. The list is no longer maintained, as it has been largely superseded by the HUMPs. |
| CoA | County Top - Administrative | The highest point within (or sometimes on) the boundary of each county. The redrawn administrative boundaries and introduction of Metropolitan Counties in the mid 1970s. These began to be abolished in the 1990s. |
| CoH | County Top - Historic | The highest point within (or sometimes on) the boundary of each county. Historic County tops is a traditional list of counties from which people usually take their local cultural identity. Largely changed in 1974. |
| CoL | County Top - London Borough | The highest point within the Boroughs of London |
| CoU | County Top - Current County and Unitary Authority | The highest point within (or sometimes on) the boundary of each county. A list of Counties, Metropolitan Districts and Unitary Authorities that came into existence in the 1990s, and are still changing. The current UK counties list. |
| CT | Corbett Top | Scottish hills between 2500-2999ft in height with a drop of at least 30m on all sides (now superseded by the Simms along with Murdos and Graham Tops). |
| D | Donald | The Donalds are named after Percy Donald and his list of hills over 2000ft in the Scottish Lowlands. They are based on a complicated formula for determining separate hills, and originally comprised 87 hills plus a number of other named "Tops". |
| Dart | Dartmoor Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the Dartmoor National Park |
| DDew | Donald Dewey | A Donald Dewey is a hill in the Scottish Lowlands between 500m-609m in height with a drop of at least 30m on all sides. |
| Dew | Dewey | A Dewey is a mountain or hill exceeding 500m in height, but below 610m. it must be separated from adjacent tops by a height difference of at least 30 metres on all sides. The Deweys are named after the list's compiler, Michael Dewey |
| Dil | Dillon | A Dillon is a hill in Ireland over 2000 feet (610m) which appears in Paddy Dillon's book, The Mountains of Ireland. There is no criterion for re-ascent (drop), so it is subjective list. |
| DN | New Donald | The New Donalds are an attempt to rationalize the Donalds. They are hills in Central or Southern Scotland at least 2000ft high with a drop of at least 30m. All New Donalds are either a Donald or a Donald Top. |
| DT | Donald Top | The Donalds Tops are named after Percy Donald and his list of hills over 2000ft in the Scottish Lowlands. They are based on a complicated formula for determining separate hills, and originally comprised 87 hills plus a number of other named "Tops". |
| Ex | Exmoor Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the Exmoor National Park |
| F | Furth | The hills outside Scotland with a height of at least 3000ft and listed on a table maintained by the SMC. |
| Fel | Fellranger | The Fellrangers are Lake District hills listed in the Lakeland Fellranger guides by Mark Richards. |
| G | Graham | A Graham is a Scottish hill between 2000-2499ft in height with a drop of at least 150m on all sides. The Grahams are also a subset of the Marilyns. |
| GT | Graham Top | Scottish hills between 2000-2499ft in height with a drop of at least 30m on all sides (now superseded by the Simms along with Murdos and Corbett Tops). |
| Hew | Hewitt | A Hewitt (Hills in England, Wales and Ireland over Two Thousand feet) (610m) and must have a drop of at least 30 metres (98 feet) all round. The Hewitts of England and Wales are therefore a subset of the Nuttalls. |
| HF | Highland Five | A Highland Five is a hill in the Scottish Highlands between 500m-609m in height with a drop of at least 30m on all sides. |
| How | Howgill Fells Tops | All hills classified by the DoBIH, within (or actually on) the, admittedly fairly arbitrary, boundary of the Howgill Fells |
| Hu | Hump | HUMPs are hills of any height with a drop of 100m or more on all sides. The name HUMP stands for HUndred Metre Prominence. By definition, all Marilyns qualify as Humps (but not vice versa). |
| Hu= | Hump twin-top | Equal in height to another HUMP where the drop between the two is less than 100m and at least 30m |
| LDNP | Lake District Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the Lake District National Park |
| M | Munro | Scottish hills at least 3000 feet in height regarded by the SMC as distinct and separate mountains, based on a list originally published in 'Munro's Tables' in 1891 by Sir Hugh Munro. |
| Ma | Marilyn | A Marilyn is a hill of any height with a drop of 150m or more on all sides. So it is a hill which is relatively high compared to its surroundings. The Marilyns were named by the list's compiler, Alan Dawson, after the Scottish mountain list, the Munros. |
| Ma= | Marilyn twin-top | Is a hill which is equal in height to another Marilyn where the drop between the two is less than 150m and at least 30m |
| MT | Munro Top | Scottish hills of at least 3000ft but considered to be a subsidiary top of a Munro |
| Mur | Murdo | Scottish hills over 3000ft high with a drop of at least 30m on all sides (now superseded by the Simms along with Corbett Tops and Graham Tops). |
| N | Nuttall | Hills in England and Wales at least 2000 feet high with a drop of at least 15 metres on all sides, as published in The Mountains of England and Wales. The list includes 127 summits that do not qualify as Hewitts. |
| NNP | Northumberland Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the Northumberland National Park |
| NPAONB | North Pennines AONB Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the North Pennines AONB |
| NYM | North Yorks Moors Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the North Yorks Moors National Park |
| O | Other lists | Hills appearing on other lists not currently featured on the database/website |
| PDT | Peak District Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the Peak District National Park |
| s4 | Sub490-499m TUMP | s4 (sub4) is a category 4 TUMP which just fails (by up to 10m) to qualify on the drop rule, i.e. between 490-499m in height but with 20-29m drop, instead of the usual 30m drop. |
| s5 | Subdodd | A Subdodd is a Dodd which just fails (by up to 10m) to qualify on the drop rule, i.e. between 500m-599m in height but with 20-29m drop, instead of the usual 30m drop. |
| sHu | Subhump | A SubHUMP is a HUMP which just fails (by up to 10m) to qualify on the drop rule, i.e. drop of 90m to 99m on all sides. |
| SIB | SIB | Significant Isle of Britain, an island with at least 30 hectares of area or a prominence of 30m |
| Sim | Simm | A Simm is a hill in England, Wales or Scotland over 600m high with a drop of at least 30 metres all round. Simm is an acronym for Six-hundred Metre Mountain. |
| sMa | Submarilyn | A subMarilyn is a Marilyn which just fails (by up to 10m) to qualify on the drop rule, i.e. drop of 140m to 149m on all sides. |
| sSim | Subsimm | A Subsimm is a Simm which just fails (by up to 10m) to qualify on the drop rule, i.e. over 600m with 20-29m drop. |
| Sy | Synge | The Synges are Lake District hills listed in The Lakeland Summits: Survey of the Fells of the Lake District National Park by Timothy Synge. |
| T100 | Trail 100 | A subjective list of 100 UK hills which appeared in the April 2007 issue of Trail Magazine |
| Tu | TUMP (All) | A TUMP (Thirty & Upward Metre Prominence) is a hill in Scotland, England, Wales, the Isle of Man or Channel Islands which is separated from adjacent tops by a height difference of at least 30 metres on all sides. |
| Un | Unclassified | Hills not appearing on any list, or hills which formerly appeared on a list but have since been removed |
| VL | Vandeleur-Lynam | A Vandeleur-Lynam is a hill in Ireland at least 600m high with a drop of at least 15m on all sides. In 1952 Joss Lynam produced a list of 2000ft summits with 50ft drop with assistance from Rev CRP Vandeleur. |
| W | Wainwright | The Wainwrights are a list of hills appearing in the seven volumes of Alfred Wainwright's Pictorial Guides to the Lakeland Fells. The list is subjective, some hills just being prominent points at the end of a ridge or spur from a higher mountain. |
| WO | Wainwright Outlying Fell | Hills in the additional volume produced by Wainwright, entitled The Outlying Fells of Lakeland. |
| xC | Deleted Corbett | Hills formerly on the Corbetts list which have been found not to qualify |
| xDT | Deleted Donald Top | Hills formerly on the Donald or Donald Tops list which have been found not to qualify |
| xG | Deleted Graham | Hills formerly on the Grahams list which have been found not to qualify |
| xMT | Deleted Munro Top | Hills formerly on the Munro or Munro Tops list which have been found not to qualify |
| xN | Deleted Nuttall | Hills appearing in the Nuttalls books as 'deleted' which just fail to qualify on either the height or difference rule. |
| Y | Yeaman | Scottish hills with an ascent of 100m all round, or, failing that, at least 5km (walking distance) from any higher point (no longer maintained, largely superseded by the Humps) |
| Y30 | Dales 30 | The Top 30 hills inside the boundary of the Yorkshire Dales National Park with a minimum height of 2000ft and a drop of 30m or more. Essentially the heighest 30 Hewitts in the Dales - as classified in the Dales 30 book by Johnny Smith. |
| YDT | Yorkshire Dales Tops | All hills classified by the DoBIH, within (or actually on) the boundary of the Yorkshire Dales National Park |