 Surrey work at motorway bases at Godstone M25 junction 6, Chertsey M25 junction 11 and Burpham near on the A3.Sussex Police works in conjunction with Surrey Police policing the main north-south A roads in and out of Sussex, particularly the A21, A22, A23 and A24 as well as the main east-west A road which is the A27.Sussex Police use fully marked BMW 5 & 3 Series Estates as well as marked BMW X5s and a variety of unmarked cars.