Telephone Code Index - 01536
| 200502 | Ball & Young Ltd - Corby |
| 722100 | Barton Plant Ltd - Kettering |
| 202583 | C & B Engineering - Corby |
| 483743 | Catlin Building Services Ltd. - Kettering |
| 201885 | Collinswood Joinery - Corby |
| 762804 | Cope Antony G - Kettering |
| 511881 | Kettering Ceramics Tile Centre - Kettering |
| 446980 | Living Space (UK) Ltd - Corby |
| 402005 | M Ormond Fabrications - Corby |
| 512625 | N Stephenson & Son (Kettering) Ltd. - Kettering |
| 401318 | Noone Pipelines Ltd - Corby |
| 266258 | Quantum Windows Ltd. - Corby |
| 725042 | South Midlands Construction Ltd. - Wellingborough |
| 330360 | Sovereign Plant Ltd. - Kettering |
| 747500 | Uk Generators Ltd - Corby |
| 721010 | Versalift Distributors (U K ) Ltd. - Kettering |
| 314700 | Volkerinfra Ltd. - Kettering |
| 201992 | Welland Timber Products Ltd. - Corby |