There must be a reason why it's been cut off
Any pics of the garage cu?
I have no idea why it've been cut off. Checked garage CU, sockets and light wiring look fine. Possible something wrong with cable buried in ground, I am not sure if the waste pipe does goes all the way from house to garage, I will be digging a few holes to see.
I will upload a few photos later as I'm not on site atm.
Daniel.