Adding outside socket to existing cable?

[AP1990LTN]

Hello, I have an outside cable going from the house to a shed can I cut and splice a outside socket into it?
Socket will go on the back of the shed

 

[davesparks]

Does this cable only supply lights? If so it is unlikely to be suitable to supply a socket.

 

[pc1966]

Do you know what is feeding the cable?

I.e. is it on a dedicated circuit or is it fed from a fused connection unit (FCU) off one of your socket circuits?

 

[Dustydazzler]

Looks like 2.5swa to me...

so long as it’s not fed via the house lighting circuit, I don’t see any issue feeding a single outdoor socket

(usual caveats apply like is it rcd protected)