Telephone Code Index - 01458
| 272514 | A & A Williams (Tech) Ltd - Somerton |
| 441500 | Avalon Engineering Services Ltd - Street |
| 830666 | Bannell Paul (General Engineering) - Glastonbury |
| 445763 | Barber Oil and Gas Boiler Services - Street |
| 273463 | Jls Designs Ltd. - Somerton |
| 253039 | Lubrisolve Engineering Solutions Ltd. - Langport |
| 860264 | Middleton Engineering Ltd. - Glastonbury |
| 834711 | Norman Parsons - Glastonbury |
| 446567 | Pinera - Street |
| 850653 | Richard Ash Horse Shoes - Somerton |
| 241533 | Robin Holm (Machine Tools) - Langport |
| 830469 | Secondgear Engineering - Glastonbury |
| 835410 | Stationworks Joinery - Glastonbury |
| 442167 | Stone RHG - Street |
| 270111 | Tru Precision (Holdings) Ltd. - Somerton |
| 224080 | Varlin Storage Ltd. - Somerton |