Creator of that viral tube sign: 'I didn't think people would think it was real'

John Moore, who posted the sign to his Facebook page, said he wanted to pay tribute to the emergency services using a well-known internet meme - which ended up being read out in the House of Commons

At 8.41pm on the day that terror hit Westminster, a doctor in Windsor called John Moore posted a picture he made on a well-known tube sign generator site to his Facebook page.

It said: "All terrorists are politely reminded that THIS IS LONDON and whatever you do to us, we will drink tea and jolly well carry on. Thank you."