eric_
The Ross Development Trust is now based in Colinton (32 Hailes Avenue -- see https://www.rdtrust.org/about-us/).

I updated the name (the old_name was the right one) and the surroundings in this changeset:
https://www.openstreetmap.org/changeset/62972171

@Gregory: Great Aunt Lizzie is the name of an aunt in a children BBC's series called Teacup Travels (see https://en.wikipedia.org/wiki/Teacup_Travels). I added a description for this object to keep this information.

Let me know if you're happy or not with this update. 