The only paths we mark are officially adopted trails like the West Highland Way. Anything else, Cape Wrath, Cairngorms Loop, etc, are not marked. Nor will you won't find a signpost or trail blazes to Ben MacDui. We traditionally have expected people to have a map and be competent. 

I'd not heard of these Rother books before. I'm kind of surprised you have added them as routes when you say they aren't accurate. 

They don't sound appropriate to add if I'm honest. But I won't delete them. I'll leave you to consider that, maybe. 