K.O. Marsh (Ian Farmer Associates)  - WG Chairman
I. Barnabas (Analytical & Environmental Services)
K. Brooks (Bureau Veritas)
R. Brown (Fugro Engineering Services)
M. Bumstead (Norfolk Partnership Laboratories)
R. Edwards  (Amec)
D. Entwistle (British Geological Survey)
T. Greenwood (Southern Testing Laboratories)
T.N. Hardie  (Geotechnics)

P. Keeton (Soil Mechanics)
C. Knighton  (Envirolab)
J. Latham (Geotest Laboratories)
J. Masters (Geolabs)
A.R. McKenzie  (Jacobs)
A. Symis  (RSA Geotechnics)
J. Wilson (Norwest Holst Soil Engineering)