Can You Spot What's Wrong With This Outside Socket?

Can you spot what's wrong with this poorly installed socket?
If you said 'It's not earthed' you would be correct. This poorly installed outside socket in Pocklington was detected by a hot tub hire company who before they plugged in their hot tub at the customer's home they checked the socket using a plug-in tester, That told them that there was something up with that socket and that they shouldn't use it and should seek electrical advice. Luckily the hire company found another socket outlet inside the house that was correctly wired to connect ther hot tub too safely. A safely conscious hot tub hire company with simple tester found this problem in the first place, and KH Electrical Pocklington Electrician put it right.