Just because they had yellow rear number plates does not mean they were from the UK.
How any times do we see DL cars with yellow rear number plates yet the guards seem to take no notice.
it is against the law to release these lanterns, without notifying the Irish Aviation Authority, local airports and coast guard they have to be used in a controlled environment. They pose a serious risk to life yet they are on sale in nearly every pound shop and petrol station in the county. People are not aware that they are breaking the law as they are sold as an alternative to fireworks.