Hello!

I'm hoping someone can please shed some light on this ('cuse the pun). I am not an electrician but I hope I am allowed to post this here?

The house we bought has 5 of these garden lights along the walls (inside our boundary):

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They are powered off an outdoor plug socket which runs a cable to them that is simply buried in the ground along the walls (which are garden beds), not in conduit.

The cable says the following on it "Aberdare cables GBU1 300/500V Sans 1507"

and looks like this:

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1) Is it legal to have this cable running unprotected in the ground? It seems really dodgy having this cable unprotected in garden beds.

2) I need to run an irrigation valve control cable (8 core comms cable) along the same route as the lights cable and will probably put it in a conduit, so I thought I should maybe try to run the lights cable in same conduit. Is this legal & may I do it myself?

I was thinking of running the conduit up to the underside of each light & then down again to continue to the next one if that makes sense.

Thanks for the help!