• 24hr Abacus
  40 Highgate West Hill, LONDON, Greater London, N6 6LS
• 3 D Air Sales Ltd
  850 Brighton Road, PURLEY, Surrey, CR8 2BH
• A B Car Air Conditioning Mobile
  121 Hall Road, ISLEWORTH, Middlesex, TW7 7PB
• A C I Hot Cold Drinks Machines
  4 Wentworth Hall, LONDON, Greater London, NW7 1RJ
• A.T.S Servicewell
  Moor La Crossing, Tolpits Lane, WATFORD, Hertfordshire, WD18 9TJ
• Abbco H N V Ltd
  6 Riverside, Eynsford, DARTFORD, Kent, DA4 0AE
• Aca
  105 Ash Road, SUTTON, Surrey, SM3 9LA
• Aces Fans Ltd
  6 Ryefield Crescent, NORTHWOOD, Middlesex, HA6 1LR
• Adams Airconditioning, Heating & Refrigeration Ltd
  98 Church Drive, LONDON, Greater London, NW9 8DS
• Aero Services
  7-11 Kensington High Street, LONDON, Greater London, W8 5NP
• Aiax (A.C.) Ltd
  Horizon House, Azalea Drive, SWANLEY, Kent, BR8 8JR
• Air Conditioning Centre
  131-179 Belsize Road, LONDON, Greater London, NW6 4AB
• Air Conditioning Installations
  309 Bellegrove Road, WELLING, Kent, DA16 3RH
• Aircon Hire Ltd
  Rudolf Place, LONDON, Greater London, SW8 1RP
• Airconditioning & Associated Services Ltd
  The Corner House, 71 Epsom Road, EPSOM, Surrey, KT17 1LW
• Aircool Air Conditioning
  Suite A, 240 Lea Bridge Road, LONDON, Greater London, E10 7LN
• Aircrest Vehicle Refrigeration
  Harbour House, Coldharbour Lane, RAINHAM, Essex, RM13 9YA
• Airtec
  Park Royal Road, LONDON, Greater London, NW10 7LQ
• Airteck UK Ltd
  Unit 7b Midas Business Centre, Wantz Road, DAGENHAM, Essex, RM10 8PS
• All Four Seasons Ltd
  6 Stoneleigh Park Road, EPSOM, Surrey, KT19 0QT
• All Weather Air Conditioning & Mechanical Services
  1 Scotts Road, BROMLEY, Kent, BR1 3QD
• Allcool (London) Ltd
  Ripple Road, BARKING, Essex, IG11 0RJ
• Allied Commissioning Engineers Ltd
  146b Park View Road, WELLING, Kent, DA16 1SR
• Anderson Air Conditioning Services
  31 Fouracres, ENFIELD, Middlesex, EN3 5DR
• Apt Air Conditioning Services Ltd
  Enterprise House, Ashford Road, ASHFORD, Middlesex, TW15 1XG
• Argonaut 2000 Ltd
  121 Mawney Road, ROMFORD, Essex, RM7 7BH
• Artic Property Services Ltd
  Artic House Business Park, Green Lane, LONDON, Greater London, SE9 3TL
• Aspen Cooling Services Ltd
  14 Woodgate, WATFORD, Hertfordshire, WD25 7DF
• Atko Services
  46 Millway, LONDON, Greater London, NW7 3RA
• BH & Sons Ltd
  6 Hazel End, SWANLEY, Kent, BR8 8NU
• BST Aircon Ltd
  40c Heath Road, TWICKENHAM, Middlesex, TW1 4BZ
• Barrow & Brooks Ltd
  Unit 14 Langley Wharf, Railway Terrace, KINGS LANGLEY, Hertfordshire, WD4 8JE
• Belimo Automation UK Ltd
  Unit 10 Shepperton Business Park, Govett Avenue, SHEPPERTON, Middlesex, TW17 8BA
• Boss Air Conditioning Ltd
  217 Baldwins Lane, Croxley GN Rickmansworth, RICKMANSWORTH, Hertfordshire, WD3 3LH
• C & R Crystal Air Conditioning
  657 North Circular Road, LONDON, Greater London, NW2 7AY
• C S M Ltd
  55 Bishopsgate, LONDON, Greater London, EC2N 3AS
• CHB Distribution Ltd
  17 The Hawthorn Centre, Elmgrove Road, HARROW, Middlesex, HA1 2RF
• Carrier Air Conditioning
  2 Maple Grove Business Centre, Lawrence Road, HOUNSLOW, Middlesex, TW4 6DR
• Carrier Air Conditioning
  United Technologies House, Guildford Road, Fetcham, LEATHERHEAD, Surrey, KT22 9UT
• Carrier Service
  14 Airport Industrial Estate, Main Road, Biggin Hill, WESTERHAM, Kent, TN16 3BW
• Centurion Air Conditioning Ltd
  21 Chatsworth Road, SUTTON, Surrey, SM3 8PJ
• Chilled Solutions Holdings
  92 Cecil Street, WATFORD, Hertfordshire, WD24 5AP
• Compact Cooling
  148 Forresters Drive, WALLINGTON, Surrey, SM6 9LA
• Comserve Ltd
  54 Watling Street, RADLETT, Hertfordshire, WD7 7NN
• Control Center
  Rangemoor Industrial Area, 12 Rangemoor Road, LONDON, Greater London, N15 4LX
• Control Center Barking
  3 The Invicta Centre, Alfreds Way, BARKING, Essex, IG11 0BA
• Cordell Engineering
  26-28 Elmtree Road, TEDDINGTON, Middlesex, TW11 8ST
• Cristopia Air Conditioning Equipment
  31 Elmstead Gardens, WORCESTER PARK, Surrey, KT4 7BD
• Dalerush Electronics
  Chadwick Road, LONDON, Greater London, SE15 4PU
• Daybrook
  12 Sandiford Road, SUTTON, Surrey, SM3 9RD
• Deba Cooling Towers & Engineering Co Ltd
  Nelson Works, 134-150 Hythe Street, DARTFORD, Kent, DA1 1BN
• Direct Air Supplies
  4 Brocklebank Industrial Estate, Brocklebank Road, LONDON, Greater London, SE7 7SX
• Direct Commissioning Services
  153 High Road, ROMFORD, Essex, RM6 6NL
• Domestic Air Conditioning Solutions
  244 Shenley Road, BOREHAMWOOD, Hertfordshire, WD6 1TJ
• Earthcare Products
  46 Queen Annes Gate, LONDON, Greater London, SW1H 9AP
• Earthwatch Technology International Co
  Blackfriars, LONDON, Greater London, SE5 8HR
• Eastdale Ltd
  Eastern Works, 4 Eastern Road, LONDON, Greater London, E17 9DU
• Elite Maintenance Services
  19 Wells House Road, LONDON, Greater London, NW10 6ED
• Emtec Products Ltd
  Enterprise House, 133 Blyth Road, HAYES, Middlesex, UB3 1DD
• Engineering Co UK Ltd
  81 Sheringham Avenue, LONDON, Greater London, N14 4UJ
• Et Environmental
  47 Central Avenue, WEST MOLESEY, Surrey, KT8 2QZ
• Eurogem Air Conditioning Ltd
  A J P Business Centre, 152-154 Coles Green Road, LONDON, Greater London, NW2 7HD
• Ewa Controls
  2 Farnell Road, ISLEWORTH, Middlesex, TW7 6EX
• GW Air Conditioning Ltd
  Airport House, Purley Way, CROYDON, Surrey, CR0 0XZ
• Gazelle Ventures Ltd
  276b New Road, Croxley Green, RICKMANSWORTH, Hertfordshire, WD3 3HH
• Ghais Services
  14 Wood End Green Road, HAYES, Middlesex, UB3 2SH
• Guardworth Ltd
  85 Gloucester Road, CROYDON, Surrey, CR0 2DN
• H C B S
  40 Highfield Road, ROMFORD, Essex, RM5 3RA
• Holland Heating UK Ltd
  United Technologies House, Guildford Road, Fetcham, LEATHERHEAD, Surrey, KT22 9UT
• Hvac Plant Proving Ltd
  98 Cannon Workshops, 3 Cannon Drive, LONDON, Greater London, E14 4AS
• I.D.H. Air Conditioning Ltd
  1 Epsom Road, EPSOM, Surrey, KT17 1NW
• Ice Gem Air Conditioning
  6 Melrose Gardens, WALTON ON THAMES, Surrey, KT12 5HF
• J L Aircon Ltd
  15-21 Risborough Street, LONDON, Greater London, SE1 0HG
• Jola Refrigeration & Air Conditioning
  40 ST. Johns Road, WEMBLEY, Middlesex, HA9 7JQ
• Kelvin Ross Engineering Ltd
  7 Mayday Road, THORNTON HEATH, Surrey, CR7 7XA
• Key Contracting Ltd
  Lacey House, Holly Road, Hampton Hill, HAMPTON, Middlesex, TW12 1QQ
• Klima-Therm (Distribution) Ltd
  42 Weir Road, LONDON, Greater London, SW19 8UG
• Krantz Systems
  312 High Street, SUTTON, Surrey, SM1 1PR
• Lennox Industries Ltd
  14 Denison Road, LONDON, Greater London, W5 1NU
• M.J. Motors
  20-24 Station Road, HAYES, Middlesex, UB3 4DD
• Media Choice
  Matrix House, Victoria Road, DARTFORD, Kent, DA1 5AJ
• Metro Heating & Air Conditioning Services Ltd
  26 Westgate Road, DARTFORD, Kent, DA1 2AS
• Mirage Air
  Unit 9c Atlas Business Centre, Oxgate Lane, LONDON, Greater London, NW2 7HJ
• Mitsubishi Electric Group
  Unit 4, New Mill Road, ORPINGTON, Kent, BR5 3QA
• National Aircon Ltd
  4 Hainault Works, Hainault Road, Little Heath, ROMFORD, Essex, RM6 5NE
• Nor-Easter
  Dukes Yard, Shakespeare Indust Estate Acme Road, WATFORD, Hertfordshire, WD24 5AL
• Oakwood Air Conditioning Ltd
  21 Manresa Road, LONDON, Greater London, SW3 6LZ
• Olympic Group
  Olympic House, 129-131 New Road, Croxley Green, RICKMANSWORTH, Hertfordshire, WD3 3EN
• Omega Environmental Technologies UK Ltd
  47 Bowness Crescent, LONDON, Greater London, SW15 3QN
• On Line Air Con Ltd
  55-57 Watford Way, Hendon, LONDON, Greater London, NW4 3AX
• Opus Airconditioning Ltd
  Unit 52 Victoria Industrial Park, Victoria Road, DARTFORD, Kent, DA1 5AJ
• Parts & Climates Centre
  6 Beddington Cross, CROYDON, Surrey, CR0 4TA
• Perkins R & Sons Ltd
  201 London Central Markets, LONDON, Greater London, EC1A 9LH
• Plant Mart Ltd
  7 Langhedge Lane Industrial Estate, Langhedge Lane, LONDON, Greater London, N18 2TQ
• Powermaster Products Ltd
  6 ST. Clare Business Park, Holly Road, HAMPTON, Middlesex, TW12 1PZ
• Premier Refrigeration
  50 Oak Hill Crescent, WOODFORD GREEN, Essex, IG8 9PW
• Race Air Conditioning Contractors
  25 Bohun Grove, BARNET, Hertfordshire, EN4 8UB
• Rapid Air Conditioning
  Longmead Indust Estate, Felstead Road, EPSOM, Surrey, KT19 9AX
• Rapid Heat Busters
  Longmead Indust Estate, Felstead Road, EPSOM, Surrey, KT19 9AX
• Rapid Heatbusters Ltd
  423 Becontree Avenue, DAGENHAM, Essex, RM8 3UH
• Ravco International Ltd
  21 Moor Park Industrial Estate, Tolpits Lane, WATFORD, Hertfordshire, WD18 9SP
• Regency Building Services Ltd
  Cable Works, Units 1 & 2 Station Road, Harold Wood, ROMFORD, Essex, RM3 0DQ
• S K Sales
  Unit 16 Kimpton Trade & Business Centre, Minden Road, SUTTON, Surrey, SM3 9PF
• S N C Air Conditioning
  48b Trowley Rise, ABBOTS LANGLEY, Hertfordshire, WD5 0LW
• Stulz U.K. Ltd
  First Quarter, Blenheim Road, EPSOM, Surrey, KT19 9QN
• Sun Ice Air Conditioning
  6 Melrose Gardens, WALTON ON THAMES, Surrey, KT12 5HF
• Sunrise
  6 12 Horn Lane, LONDON, Greater London, SE10 0RT
• TC Services
  Unit 3 Garth Road, 1-7/Amenity Way, MORDEN, Surrey, SM4 4NJ
• TRN Cooling & Maintenance
  11 Pembroke Road, NORTHWOOD, Middlesex, HA6 2HP
• The Dcarter Group
  37 Leesons Hill, ORPINGTON, Kent, BR5 2LF
• Toshiba Air Conditioning
  United Technologies House, Guildford Road, Fetcham, LEATHERHEAD, Surrey, KT22 9UT
• Toshiba Carrier UK Ltd
  United Technologies House, Guildford Road, Fetcham, LEATHERHEAD, Surrey, KT22 9UT
• Tower Systems Ltd
  Unit 4b Sandown Road Industrial Estate, WATFORD, Hertfordshire, WD24 7UB
• Tri Controls Systems Ltd
  Colham Green House, Colham Green Road, UXBRIDGE, Middlesex, UB8 3QQ
• Trusall Ventilation Ltd
  154 Percival Road, ENFIELD, Middlesex, EN1 1QU
• Vehi Cool
  40 Caraway Close, LONDON, Greater London, E13 8PN
• Weldatube Mechanical Servicesltd
  187 Edward Place, LONDON, Greater London, SE8 5HD
• Zeta Cool
  416-418 London Road, ISLEWORTH, Middlesex, TW7 5XB