From: British Airports Authority
To: All air passengers planning to return to the UK through any British
airport, from 1/03/16.
Important security update for our valued passengers
Due to the
developing security situation across the Middle East, the Far East, North
Africa, Southern Africa, Central Europe, Southern Europe, Eastern Europe, Northern Europe, most of Western Europe and just about anywhere
else counting as 'foreign' apart from Canada (which is relatively harmless), and those parts of the USA not affected by Donald Trump, and also because of the upcoming referendum on
membership of the EU, the Foreign Office has informed all travellers and NGOs
with British staff to make them aware of the following, when planning return
trips to the U.K.