1. Visit the government website magic.com:
https://magic.defra.gov.uk/home.htm
2. Press 'get started' and enter the postcode or place name of the area you wish to search in the white box at the top left of the screen. This will bring up a OS map at 1:10000 which you can zoom in and out of.
3. Click on the tab marked 'land based schemes' on the left of screen. Tick the boxes for
'Agri-Environment Schemes' and
'Forestry and Woodland Schemes', then unclick the boxes marked
'Higher Level Stewardship Target Areas (England)' and
'Higher Level Stewardship Themes (England)'.
4. Approx. 25-30% of the land will be hatched red, orange or a shade of green. Click on the tab marked 'i' on the top of the screen and the cursor changes to a cross with the message 'Click on the Map to Identify Features'.
5. When you click on a hatched area if will bring tell you the name of the business or organisation who has management control (owner or tenant) of the said land parcel.
6. Then a little detective work can be applied to find out the address or main contact- very easy if it's a limited company or a business with a obvious name such as 'Manor Farm Partnership'.
Where possible I recommend writing or emailing farmers and landowners initially rather than cold calling. If you hear nothing back then cold call, Clive's advice is very sound, but I would also add that it is very important to pick your times e.g. don't turn up at a dairy farm during the middle of milking or a sheep farm during lambing or when they are busy silaging, and by the same token on an arable farm during the middle of harvest. If you do then your chances of being given short-shrift may increase exponentially!
Wet days are often the best times to catch people in the yard or in the farm office catching up on paperwork. Avoid weekends on livestock farms as often this is when staff are off and the farmer is likely to be busy. Also avoid August - it's a busy month with harvest and the month when staff with young families often take their leave.