The EU toy safety directive, agreed and implemented by Government, states that balloons must not be blown up by unsupervised children under the age of eight, in case they accidentally swallow them and choke.

Despite having been popular favourites for generations of children, party games including whistles and magnetic fishing games are to be banned because their small parts or chemicals used in making them are decreed to be too risky.

http://www.telegraph.co.uk/news/worldnews/europe/eu/8816601/Children-to-be-banned-from-blowing-up-balloons-under-EU-safety-rules.html

Wouldn't have been easier to ban Christmas?

Just ban children; they're far too danger-prone.