I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
The Trossachs Church lies west of the village of Brig O' Turk by the shores of Loch Achray in The Trossachs (which is part of The Loch Lomond & Trossachs National Park). There is only room for one or two cars at the church gate by the A821, although there is ample parking in the church car park when it's open (though probably not the best time to fly!). You can also park at the Ben A'an car park further west along the road.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 30/08/2021. It remains the responsibility of any pilot to check for any changes before flying at the same location.