I never did follow up on how the pollarding turned out. It has been considered to be successful, by most residents of this strata [condo -- townhouse] complex, but the problem now is getting our latest landscaper not to mention landscaping representative onto the job of trimming up the resultant smaller trees again! The pollarding was a total removal of many branches to trunk level, and a shortening to a few feet of others, the shape carefully chosen by the man who did the pollarding -- now the trees have grown back into a neat well-shaped moderate shape... still a bit on the small side, with stout trunks. However, the small branches are increasing in numbers but the original landscaper has resigned, he had personal problems and went off to solve them. Now we have a guy who is an ex-golf course lawnkeeper [I didn't hire him!] who doesn't understand shrubs and trees, and I am off Council for the time being so can't really arrange the work myself... what is required is a re-trimming to make sure the small branches don't fill up the trees with excess growth. I'll try to remember to take a few pictures for you.