"Kat" wrote | >>What I was thinking of seems to be called boom lifts in HSS-speak, | Yes. Actually, contrary to what I said, £151 for a day's hire is | probably much handier than having a scaffold erected.
If you do get it, plan your work and materials to make the most of the day's hire. Obviously check and clean the gutters, visible wonky slates etc., but also think about bargeboards and upstairs window cleaning / painting, outside lights, etc.
Owain