Excavation licence of Gipsy Hill Lane bridleway

I request a copy of The Licence, which was issued permitting the excavation of the Bridleway in Gipsy Hill Lane prior to the laying of the district heating pipes across this Bridleway?

Devon County Council does not have a record of a highway licence being granted for such work in Gipsy Hill Lane.  There is no record a bridleway in the vicinity, therefore this information is not held