Merrick

A Marilyn is any mountain in Britain or Ireland with a prominence over 150m, regardless of height.

A Hump (Hundred and upwards Metre Prominence) is any mountain in Britain or Ireland with a prominence over 100m, regardless of height.

A Simm is any mountain in Britain or Ireland with a prominence over 30m and a height above 600m.

A Corbett is any mountain in Scotland with a height between 2,500ft and 3,000ft and a prominence greater then 500ft.

A Donald is a mountain in Scotland with a height over 2,000ft and a prominence greater then 100ft.

The Trail 100 list is a list of "must climb" mountains in the United Kingdom.

An Historic County Top is a peak in one of the traditional historic counties.

A Current County/UA Top is the highest peak in a current administrative county or Unitary Authority of Britain.

A Administrative Country Top is the highest peak in one of the traditional administrative (1974-1996) counties.