The Heather and Grass Burning Code says this...
"Fire has been used by land managers for many thousands of years. When used with skill and understanding, it can benefit agriculture, game birds and wildlife".
So check out this and see that grouse shooting isn't all good for our upland environments as the grouse 'industry' says it is...
http://markavery.info/2017/01/12/burning-issues-2/