Faced with the grim news that the UK's terror threat level has been raised from 'severe' to 'critical' in the wake of the attack in Manchester - meaning that another incident could be imminent - British social media users have responded with aplomb.

Refusing to be cowed by the threat of violence, Twitter user NickMotown tweeted a message of defiance saying: "We're British. You can't scare us until you raise the threat level to 'I'm sorry, but there's only continental breakfast left'".

Jeremy Cook expressed similar sentiments with a tweet saying: "We're British. I don't get scared until the threat level hits 'Replacement Bus Service'".

Inspired by their tweets, Andrea Mann created the hashtag #BritishThreatLevels, which has been a top trend throughout Wednesday as social media users catalogued the many and varied things that really get to Britons.