I have been away for a few days and so have a little catching-up to do.
Frank - I am aware of Trees for Life, and their praiseworthy efforts in the remnants of the old Caledonian forest. If we do organise a week's get-together of NG members here in Scotland, anyone who wanted to, could volunteer for a day - or longer - with one of TFL's working parties and drive over there in a rented car. However, probably any greater involvement with TFL is outside the range of activities members might expect during a photographic week. But, as I say, individual members could make their own decision about this. TFL's main area of interest is about 2 hours' drive from here.
If you are interested in the wildlife they are trying to protect - red squirrel, fox, badger, black grouse, capercaillie, pine-marten, otter, and so on - we have them all here too, but in 12 years of living in our present village, surrounded by nature including plenty of woodland, I have never seen any of them except squirrels and otters. Wildlife is generally shy, elusive, not particularly common, and nocturnal. I expect you could spend a week in the Caledonian Forest and so no wildlife at all except the more common small birds.