The Bigger Picture
There is more to this than just an apparantly high landing fee.
I had a minor 'rant' on the Biz Jets & GA forum re the state of GA in the UK. It is all part of the same problem.
Cornwall, one of the least accessable parts of the UK in terms of road & rail should be crying out for improved links by air, and don't just mean subsidised flights by the likes of Ryanair.
If local government don't have the vision and can't/won't provide funding then pressure should be brought to bear on central gov to provide a more flexible integrated transport policy with GA recognised as playing a valuable role.
Dare I say it 'as in the USA'
Saying 'don't go to St Mawgan' will just help to fulfil the prophecy and lead to closure and the conversion of a valuable airfield to yet another industrial estate.