| IMPACT MARKETING UK LIMITED | 06502404 | Manchester | 13 February 2008 | Liquidation |
| YORKSHIRE DRY LINING CO. LTD | 06110610 | Rotherham | 16 February 2007 | Liquidation |
| G & M INSULATION LIMITED | 05802249 | Nottinghamshire | 2 May 2006 | Liquidation |
| EAST MIDLANDS THERMAL INSULATIONS LIMITED | 05681711 | Chesterfield | 20 January 2006 | Liquidation |
| RCF DUCTWORK INSULATIONS LIMITED | 05107530 | Kent | 21 April 2004 | Liquidation |
| A1 INSULATION SERVICES LIMITED | 04885257 | Norwich | 2 September 2003 | Liquidation |
| COLDSEAL GROUP LIMITED | 04852479 | Birmingham | 31 July 2003 | Liquidation |
| S.A.F. ENVIRONMENTAL LIMITED | 04532142 | Essex | 11 September 2002 | Liquidation |
| FIBRE CLEAR LIMITED | 03763698 | Cardiff | 30 April 1999 | Active |
| JMS INSULATION LIMITED | 02784994 | Leeds | 29 January 1993 | Liquidation |
| NATIONWIDE INSULATION LIMITED | 02766528 | London | 20 November 1992 | Liquidation |
| FOSTERS INSULATIONS LIMITED | 02550104 | Rossfield Road, Ellesmere Port | 19 October 1990 | Liquidation |
| FRONTPOWER INSULATION LIMITED | 02293109 | South Glamorgan | 5 September 1988 | Liquidation |
| CAVESOLD LIMITED | 02249442 | Essex | 28 April 1988 | Liquidation |
| SHORELINE CONSTRUCTION SERVICES LTD | 02067463 | | 24 October 1986 | Liquidation |
| CESTRIA FABRICATIONS LIMITED | 02043135 | Newton Aycliffe | 4 August 1986 | Liquidation |
| HAT CONTRACTING SERVICES LIMITED | 01985481 | | 4 February 1986 | Active |
| COSYTHERM LIMITED | 01931510 | Newcastle upon Tyne | 18 July 1985 | Active |
| 01841080 LIMITED | 01841080 | Nottingham | 15 August 1984 | Liquidation |
| CLAYTON INSULATION SERVICES LIMITED | 01793839 | Albert Square | 22 February 1984 | Liquidation |
| WALL-TECH INSULATION LIMITED | 01716782 | Midhurst | 20 April 1983 | Liquidation |
| INSULATED SERVICES (WEDNESFIELD) LIMITED | 01712053 | Wolverhampton | 5 April 1983 | Active |
| CLARENCE SERVICES LIMITED | 01701137 | Whittington Moor | 21 February 1983 | Active |
| NEW HORIZON CLADDING LIMITED | 01612146 | Watchfield | 8 February 1982 | Liquidation |
| WESTWARD INSULATIONS LIMITED | 01470342 | Exeter | 31 December 1979 | Liquidation |
| W.A. ELLIS (INSULATION) LIMITED | 01454732 | | 17 October 1979 | Active |
| NORTEC INSULATION LIMITED | 01232296 | Horwich | 4 November 1975 | Active |
| NORTH EAST INSULATION (NEWCASTLE) LIMITED | 01223214 | Newcastle | 15 August 1975 | Active |
| ELLESMERE PORT INSULATION COMPANY LIMITED | 01204229 | Ellesmere Port | 19 March 1975 | Active |
| BRISTOL SEALS AND SUPPLIES LIMITED | 01139358 | | 12 October 1973 | Liquidation |
| LILQUEST LIMITED | 01135401 | | 20 September 1973 | Liquidation |
| STILLY INSULATION LIMITED | 01123879 | Scunthorpe | 20 July 1973 | Active |
| NORTEC CONTRACTING LIMITED | 01089101 | Horwich | 1 January 1973 | Active |
| MOORE'S INSULATION COMPANY LIMITED | SC050642 | | 25 May 1972 | Active |
| SEWELL INSULATIONS LIMITED | 01020585 | Norwich | 11 August 1971 | Active |
| WIRRAL THERMAL INSULATIONS LIMITED | 01008910 | Merseyside | 23 April 1971 | Liquidation |
| HEATMAX INSULATIONS LIMITED | 00969562 | Oxford | 5 January 1970 | Active |
| STEVENSON THERMAL INSULATION (HOLDINGS)LIMITED | SC046136 | Rutherglen | 2 December 1968 | Active - Proposal to Strike off |
| INSUWALL LIMITED | 00942825 | Willenhall | 21 November 1968 | Liquidation |
| BOAK BROS. (INSULATION) LIMITED | SC034407 | | 30 September 1959 | Active - Proposal to Strike off |
| HENRY MUSKER & COMPANY LIMITED | 00601418 | Doncaster | 27 March 1958 | Active |
| THERMAL & ACOUSTIC INSTALLATIONS LIMITED | 00555674 | Birstall Batley | 7 October 1955 | Liquidation |
| L.WYNNE & CO.(MANCHESTER)LIMITED | 00551406 | Openshaw | 1 July 1955 | Liquidation |
| WRIGHT'S INSULATIONS LIMITED | SC029723 | | 24 November 1953 | Active - Proposal to Strike off |
| L.R BURROWS & CO. LIMITED | 00410333 | Wolverhampton | 11 May 1946 | Liquidation |
| MAGNESIA & ASBESTOS INSULATIONS LIMITED | 00380102 | London | 16 April 1943 | Active |
| FALCON INSULATIONS LIMITED | 00352305 | Diplocks Way | 26 April 1939 | Active |
| J.S.MILLER & COMPANY LIMITED | 00313158 | Leeds | 18 April 1936 | Liquidation |