Company Index
- D H L Container Logistics (U K) Ltd - Oldbury
- D H Scientific Ltd - Huddersfield
- D.C.G. (Consulting Engineers) Ltd - Basildon
- D.I.C. (Uk) Ltd - Feltham
- Dacoma Ltd - Redditch
- Dainton Ltd - Ripon
- Dalau Ltd - Clacton on Sea
- Dale (Mansfield) Ltd - Mansfield
- Dale UK Ltd - Scunthorpe
- Daltrade plc - Goole
- Dampa(U.K.)Ltd - Wallingford
- Danoil Lubricants Ltd - Ossett
- Darex UK Ltd - St Neots
- Dartford Composites Ltd - Erith
- Dasic International Ltd - Romsey
- Dataco - Aberdeen
- Datalink Electronics Ltd - Loughborough
- David Carless - Newtownabbey
- Davis Schottlander & Davis Ltd - Letchworth
- Davy Process Technology - Stockton on Tees
- Davy Process Technoloy - London
- Dawson Downie Lamont Ltd - Glenrothes
- Dawsonrentals Portable Cold Storage Ltd - Sutton in Ashfield
- Dax Products Ltd - Nottingham
- Deb Ltd - Belper
- Dechra Ltd - Skipton
- Decorative Acrylic Co Ltd - Kirkby in Ashfield
- Dee-Anel Ltd - Telford
- Deepdale Engineering Co Ltd - Dudley
- Degussa Construction Chemicals - Manchester
- Degussa Ltd - Macclesfield
- Delimon Cooling / Delimon Denco Lubrication - Hereford
- Delta Petroleum Services - Lincoln
- Delta Resins Ltd - Stockport
- Delta Technology - Darlington
- Deltaform Ltd - Bridgwater
- Deltamoore Ltd - Attleborough
- Demon International Ltd - Ivybridge
- Dendron Ltd - Watford
- Denehurst Chemical Safety Ltd - Ilkley
- Denro - Shrewsbury
- Deritend Electromechanical Services Ltd - Birmingham
- Derrick Services (Uk) Ltd - Great Yarmouth
- Design Research and Development Co Ltd - Billingham
- Designs on Beauty Ltd - Consett
- Destec Engineering Ltd - Lincoln
- Desurvey Plc - Ryde
- Detection Instruments (Northern) Ltd - Kilmarnock
- Deutag Overseas (Curacao) NV - Aberdeen
- Devine Chemicals - Consett
- Diamond Offshore (UK) Ltd - Aberdeen
- Diamould Ltd - Barrow in Furness
- Dickies (UK) Ltd - Bath
- Dinardo Partnership - Paisley
- Dionex (UK) Ltd - Camberley
- Dipetane Distribution - Fakenham
- Direct Charcoal - Hope Valley
- Directa UK Ltd - Chelmsford
- Distillation Equipment Company Ltd - Stone
- Dixon Chew (Batley) Ltd - Dewsbury
- Dixon Marine Consulting Ltd - Norwich
- DJB Labcare Ltd - Newport Pagnell
- DKSH Great Britain Ltd - Wimbledon
- DM Wood Medical Ltd - Aberdeen
- DMA Water Treatment Ltd - Motherwell
- DMV UK - Stockton on Tees
- DNV Ltd - Stockport
- Doff Portland Ltd - Nottingham
- Dolphin Drilling Ltd - Aberdeen
- Domnick Hunter - Chester le Street
- Don Heating Products (Division of Gazco) - Exeter
- Dorking Advanced Cladding Ltd - Horsham
- Douglas Plating Ltd - London
- Dow Chemical Co Ltd - Middlesbrough
- Dow Chemical Co Ltd - West Drayton
- Dow Corning Analytical Solutions - Barry
- Dowding and Mills Engineering Services Ltd - Ryton
- Down Hydraulics - Downpatrick
- DPTS Ltd - Orpington
- Dragon Oil plc - London
- Drayton Tank and Accessories Ltd - Sheffield
- Dresser UK Ltd - Southampton
- Drilltec International Ltd - Corby
- Druke Ehemi (UK) Ltd - Cumbernauld
- DSB Offshore Ltd - London
- Dsm Nutritional Products (Uk) Ltd - Heanor
- Du Pont (UK) Ltd - Stevenage
- Duco Ltd - Newcastle upon Tyne
- Dundee and Angus Oil Venture Group - Dundee
- Dunlop Oil and Marine Ltd - Grimsby
- Durham Organics Ltd - Durham
- Durham Pipeline Technology - Gateshead
- Durr Technik (UK) Ltd - Bristol
- Duston Oils - Northampton
- Dwyfor Oils - Garndolbenmaen
- Dynamic Chemicals Ltd - Lanark
- Dynamic Group of Companies Ltd - Aberdeen
- Dynamic Positioning Centre The - London
- Dynamic-Ceramic Ltd - Crewe
- Dynamics - Chelmsford
- Dynex/Rivett Inc - St Neots
