Top-Hole Site Studies Ltd.,

Environment Centre, Lancaster University,

Applied & Environmental Geophysics Group, Keele University,

Glaciology Group, Swansea University,

Geophysics & Borehole Group, Leicester University,

British Geological Survey,

Geomatrix Ltd.,

English Heritage, Portsmouth

British Geological Survey,

Applied & Environmental Geophysics Group, Keele University,

Geophysics, STATS Ltd.,

Engineering Geology & Hydrology Group, Leeds University,

Pelorus Surveys & Geocone.