Had a sparky round today for a quote, and the bad news is that a 2nd consumer unit isn't feesable due to the length of the cable run.

What is possible is connecting to the cooker switch as it's on a 40 amp RCD already, running some cable through trunking drilling through the wall then just as the cable is to be run outside changing to SWA.

Just waiting on a quote, although he just rang me back to tell me that the commando 63AMP plug we were going to use is £70, so to save myself money he can hard wire it so i use the switch on the cooker.

Hopefully it wont be too much