Thanks for your views everyone. At some point there must be a height threshold beyond which bees cannot operate. A lot of roof top hives in London must be around the two to three storey level, the Fortnum and Mason hives at about 5 to 6 storey; all this seems intuitively and demonstrably...
I am trying to persuade my company to keep bees on the roof of our office building. The building is probably 170 feet or so high in central London. Of course measures will need to be taken to protect against wind but what do members think about the ability of bees to operate at that height...