Survey work on contract by arrangement.
Since 2002, David has surveyed :
 

Heathland sites in the Blackdown Hills for
Tomorrow's Heathland Heritage
 

Woodland on Bodmin Moor, and farmland
in mid Devon and Moorland in the Quantock
Hills for Tilhill Forestry
 

Grassland in South Wales with Ecosulis
 

County Wildlife Sites for the Devon
Biodiversity Records Centre