Devol Engineering Ltd  (Greenock, Scotland)
	Dale (Mansfield) Ltd  (Mansfield)
	Danser South West  (Padstow)
	David Brown Hydraulics Ltd  (Poole)
	Davis Pneumatic Systems Ltd  (Accrington)
	DavyMarkham Limited  (Sheffield)
	Dayco Europe Ltd  (Halesowen)
	DCA Ltd  (Huddersfield)
	Delta Fluid Products Ltd  (St Helens)
	Denco Ltd  (Hereford)
	Denison Hydraulics UK Ltd  (Wakefield)
	Denley Hydraulics Ltd  (Heckmondwike)
	Dennis Lee & Co  (Fakenham)
	Derek Lane & Co  (Exeter)
	Desoutter Ltd  (London)
	DG Howell (Hydraulic Engineers) Ltd  (Risca)
	DGB Hydraulic Services  (Cwmbran)
	Dichtomatik Ltd  (Pride Park)
	Dixon Europe Ltd  (Preston)
	DLI Seals Ltd
	Donaldson Filter Components Ltd  (Hull)
	Doreth Engineering Co Ltd  (Birmingham)
	Dowty Bonded Seals  (Newtown)
	Dragon Fluid Systems  (Wigan)
	Dreelside Engineering  (Anstruther)
	Dryden Aqua Ltd  (Edinburgh, Scotland)
	Duckhams Oils  (Bromley)
	Duncan Rogers Engineering Ltd  (Glasgow)
	Dunlop Hiflex Ltd  (Salisbury)
	DuPont Press Office (UK, Benelux and Nordics)  (Ely)
	Durapipe UK (formerly Durapipe Glynwed Plastics)   (Cannock)
	Durr Technik (UK)  (Bristol)
	Dynamic Air Ltd  (Milton Keynes)
	Dynatorque Inc  (Chichester)
	Dynex Rivett Inc.  (Huntingdon)