| Name | Company Number | Date Appointed | Rating |
|---|---|---|---|
| Metropower Ltd | 02557760 | 01/04/1994 | Dissolved |
| WELWYN GARDEN CITY BID LIMITED | 10582411 | 25/01/2017 | Gold |
| Waterloo & City & Underground Extensions Railways Ltd. | 02911960 | 17/02/1995 | Dissolved |
| Name | Company Number | Date Appointed | Date Resigned | Rating |
|---|---|---|---|---|
| LLOYDS BANK FOUNDATION FOR ENGLAND & WALES | 01971242 | 01/01/2005 | 31/12/2010 | Silver |
| LONDON UNDERGROUND LIMITED | 01900907 | 30/08/1991 | 16/02/1995 | Silver |
| LONDON UNDERGROUND LIMITED | 01900907 | 31/12/2001 | 14/07/2003 | Silver |
| METRONET RAIL BCV LIMITED | 03923496 | 28/03/2003 | 04/04/2003 | Dissolved |
| METRONET RAIL SSL LIMITED | 03923484 | 07/02/2000 | 03/08/2000 | Dissolved |
| THE WILDLIFE TRUSTS SERVICES LIMITED | 02540956 | 13/06/2001 | 24/11/2010 | Silver |
| TRANSPORT TRADING LIMITED | 03914810 | 24/01/2000 | 03/07/2000 | Amber |
| TREE COUNCIL(THE) | 01459056 | 11/07/1996 | 12/10/2004 | Gold |
| TUBE LINES LIMITED | 03923425 | 31/12/2001 | 31/12/2002 | Silver |
| WELWYN GARDEN CITY TOWN CENTRE PARTNERSHIP LIMITED | 08303893 | 22/11/2012 | 24/11/2016 | Dissolved |