Amec
Amec Process and Energy
Babcock Infrastructure Services
Balfour Beatty
BP Exploration
BP Grangemouth
Conoco Phillips
Defence Estates
Entrepose Industrial Services
ExxonMobil
Farrans Construction
Huntsman Petrochemicals
Innovene
Nacap Lawrence
National Grid Transco
Oceaneering
Penspen/Unipen
Scottish & Southern Energy
Scottish Water
Shell UK
Turners Limited