To participate in the surveys please visit the group's website
Hedge Survey forms
Hedge survey guide
Hedge survey recording form
Example of completed hedge survey recording form
Example of completed hedge survey map
Submit hedge survey data online
Other helpful resources
The Natural History Museum's Open Air Laboratories project produced a guidance for basic hedgerow surveys. The SACWG approach is more detailed than this, but the OPAL hedgerow survey field guide does contain images demonstrating examples of the different types of management (heavy cut, leggy, coppice(hard copy not available at CMV).
If you spot something that your cannot identify try to get a photograph. Then you can either send it to the groups' mailing list email@example.com or you can put it on Ispot, which is an online community run by OPAL to help identify wildlife.