Sounds good! Thanks for the pointers.
Im not in the house yet, should be 6 weeks or so, in SE London, Welling / Bexleyheath.
I'm pretty sure the fuse box is under the stairs so I'll need to get a cable through the kitchen and out of the back wall.
Diagram of back of house:
Garden to cross, garage is behind the ivy at the far end. There's also a short 6ft concrete gap that I'll need to cross, any idea on the guidelines for that?
I assume I'll lay that SWA in conduit under the lawn. I'll run some Cat 6 in a seperate conduit while I'm at it.
In the garage I'll want a few lights and a few double sockets dotted around.
I like the idea of doing the 90% and getting a sparky in to do the final 10.