| Postcode | Coverage Area |
| AL6 | Welwyn,Ayot St Peter,Ayot St Lawrence,Digswell,Rabley Heath,Tewin |
| CM20 | Harlow,Gilston |
| CM21 | Sawbridgeworth |
| CM22 | Bishops Stortford,Sheering |
| CM23 | Bishops Stortford,Thorley,Manuden |
| SG2 | South Stevenage,Walkern,Ardeley |
| SG3 | Knebworth,Datchworth,Woolmer Green |
| SG9 | Buntingford,Cottered,Great Hormead,Furneux Pelham,Brent Pelham,Stocking Pelham, Hare Street,Anstey,Westmill,Wyddial,Buckland,Aspenden, Chipping,Sandon,Rushden, Throcking,Meesden,Little Hormead |
| SG10 | Much Hadham,Perry Green |
| SG11 | Albury,Braughing,Bury Green,Colliers End,Haultwick,High Cross,Little Hadham,Nasty,Patmore Heath,Puckeridge,Standon,Standon Green End |
| SG12 | Ware,Amwell,Stanstead Abbotts,Stanstead St Margarets,Widford,Hunsdon,Thundridge,Wadesmill,Dane End,Tonwell,Chapmore End,Wareside,Babbs Green,Sacombe |
| SG13 | Hertford,Newgate Street Village,Bayford,Brickendon |
| SG14 | Watton-at-stone,Bramfield,Waterford |