Just to dampen all this a wee bit. The reason the fire inspectors were concerned (according to reports on the local tv) is, that to release the poppies the 'releasers' have to crawl into a small roof space between the exterior and interior wall/roof/ceiling. The fire inspectors feel that in the unlikely event of a fire there would be very little chance of escape for those individuals.
However, when did the dropping of poppies in the Royal Albert Hall manner become a necessity rather than just a nice touch?