That's a very unilateral move on the part of the UK. Were Britain's allies consulted before this statement was made? [/Sarcasm]
Start with the EU.
This is to inform that if a single Brit soldier, sailor or airman develops a cold while we destroy your thugs, family and you.
You and your palaces and Bagdhag will glow for the next several centuries!
PS: To Iran, Syria, Somalia, Lybia, we may disinfect you and your thuggish countries as a prophylatic measure.
PPS: To the Super Rich Saudi Princes, if you finance even a cold germ for the terrorists. You will have to herd goats around a no enter zone around your capital and Mecca/Medina for several centuries.
Love and Peace
Tony