Cambridge, Ely, St Ives, Huntingdon, Warboys, Chatteris, St Neots, Sandy, Biggleswade, Shefford, Hitchin, Letchworth, Baldock, and Royston.
The above list is a guide, the surrounding areas are also covered. See the list of post codes below. If your post code is not listed please phone to see if a survey could still be undertaken.
CB 1 - 6, and 21 - 25
PE 19, and 26 - 29 inclusive.
SG 5 - 8, and 16 - 19 inclusive.