This desktop study, commissioned by Easthope Associates, evaluates the archaeological impact of the proposed golf course at Heydon Grange, Heydon, Cambridgeshire. This study is limited to the area of direct development which encompasses approximately 300ha of land south of the A505 and Southeast of Flint Cross on the edge of the Essex Plateau. The proposed development is bounded on two sides (the north and the west) by modern field boundaries and on the other two sides by roads. The development area is divided by three modern fields with a fine 17th century barn at the centre (Heydon Grange, Grade II Listed). The field boundary which runs north-west/south-east to the west of the barn marks the course of the much -denuded Heydon Ditch or Bran Dyke, a probable Saxon linear defensive ditch and bank. No excavation or systematic survey has taken place in the boundaries of the proposed development, but several findspots are recorded in the County Sites and Monuments Record (SMR). The aerial photographic record of the area of proposed development has been examined, but no features were apparent.