It seems to me that the correspondents last week may be struggling a bit here. There are thousands of buildings with many more severe 'problems' than the Commonwealth Institute and we haven't concluded that they must therefore all be demolished - the Lloyd's building, the Pompidou Centre and the Sainsbury Centre come to mind, to name but three.
The only salient fact here is whether the building is good enough to retain and to warrant the care that it requires. In my view it is and it does.
Bryan Avery, Avery Associates