The borough was granted a coat of arms in 1963, which illustrated the union of the two towns. The shield was divided horizontally in a dovetail pattern to show the joining of two municipalities. At the top of the shield were two hunting horns for Huntingdon, and at the base a fleur-de-lis from the common seal of Godmanchester. The supporters on either side of the shield were described as a "medieval huntsman" and a "medieval oxherd", and they stood upon a representation of the old bridge at Huntingdon that linked the two towns. The motto was United We Advance.
On 1 April 1982 the union of the two towns ended, with the formation of two separate civil parishes of Huntingdon and Godmanchester,[2] each governed by a town council. In 1961 the parish had a population of 8821.[3]