Meter Tails

[skotl]

...I want to be able to stand there and have a good idea of how it could be done so I don't look like an idiot.

You would not look like an idiot - you would just look like any other customer who has paid to get an expert in to do the job that they are trained, qualified and competent to do.

However, that doesn't matter because there is no electrician - you're hoping to get "the right answers" and save yourself £200 by doing it yourself.

Seriously, I wouldn't bother. It's not going to be as expensive as you think to get a professional in (a real one, not the imaginary one that is "coming on Monday" ) what you're trying to attempt is dangerous, to you and anyone else in your house.

 

[OwainDIYer]

The new circuits will be for sockets and lights to the cellar, lights in the garden and one external socket.

Surely those extra things can be connected to one or more of the existing circuits, therefore removing the need for an additional consumer unit.

They can be, but should they be? Perhaps the existing circuits are already heavily loaded.