HardwarePT  (Cheadle)
	HARTING Limited  (Northampton)
	Haven Automation  (Swansea)
	Hawker Electronics Ltd  (Birmingham)
	HBM United Kingdom Ltd  (North Harrow)
	HMS Industrial Networks Ltd  (Coventry)
	H P C Engineering PLC   (Burgess Hill)
	H R S Heat Exchangers Ltd   (Watford)
	H R Textron
	H S M Industrial Fans   (Keighley)
	H T A Transys Ltd   (Tamworth)
	H&b Sensors Ltd   (Bognor Regis)
	H. Kuhnke Ltd
	H. Wilson & Son   (Hartlepool)
	H.B. Sale Ltd
	H.D. Hill & Sons Ltd
	H.D. Howden Ltd   (Motherwell)
	H.S. Pipequipment Ltd (HSP)  (Newbury)
	HACH LANGE LTD  (Manchester)
	Halda Ltd   (Warrington)
	Haldo Developments Ltd  (Bury St. Edmonds)
	Hale Hamilton Valves Limited  (Uxbridge)
	Halifax Fan Ltd   (Halifax)
	Hall Rewinds   (Oldham)
	Hall Rewinds  (Kendal)
	Hallcrest Ltd   (Poole)
	Halolux Electric Motors  (London)
	Halton Products Ltd   (Witham)
	Hambro Countrywide Security P.L.C.  (Basingstoke)
	Hamilton (GB)  (Carnforth)
	HAM-LET UK Ltd  (Wakefield)
	Hamlin Electronics Europe Ltd   (Diss)
	Hammond Power Solutions (HPS)  (Baraboo, USA)
	HANNOVER MESSE  (Hannover, Germany)
	Hansa Associates  (Congleton)
	Hansford Sensors Ltd  (High Wycombe, UK)
	Hanwell Instruments  (Letchworth)
	Harrier Pneumatics Ltd  (Portswood)
	Hartest Precision Instruments Ltd  (Croydon)
	Haswell Engineers Ltd  (Clacton-on-Sea)
	Havard & Bidwell (Engineering & Design) Ltd
	Hawco Ltd  (Nr Goddalming)
	Hawke Cable Glands Ltd  (Ashton-Under-Lyne)
	Hawke International  (Ashton Under Lyne)
	Hayward Tyler Ltd  (Luton)
	Haztech Systems Ltd   (Dyce)
	Health and Safety Executive (HSE)  (London)
	Heap & Partners Limited  (Wirral)
	Heason Technology Ltd  (Slinfold)
	Heatex Ltd   (Thetford)