An important skill it was always useful to have was how to dial the emergency services on a dialphone if you couldn't see the dial (such as in the dark during a power cut, in a smoke filled room or you had been blindfolded by a bunch of big lads in balaclavas). I feel this is still an important skill to have so here is a quick guide to calling 999, if you can't see.
Take your first two fingers and locate the dial, put your fingers in the last two holes next to the metal prong.
As so, now you have your fingers in 9 and 0.
Remove your right most finger (which should be on 0). Now dial with your other finger (which should be on 9).
Go all the way around until you reach the other side of the prong and release. Do this two more times then hopefully you will get the emergency services operator. Good luck!