That is fair enough, i personally would not leave live wires under floors like that if i was doing DIY and seen that i would either change it myself if i can or get it re routed but that is just me. Hope no one forgets the cable is there and tries to hammer down a nail to stop a squicky floor board in the future
On the plus side it is armoured cable so should be quite tough, bit strange seeing it inside on a socket like that though LOL.
Match the polystyrene then board copy whats there.