I Hope you enjoy my Instructable, This was one of my most enjoyable Projects! and I had good results from the little cost it has cost me.
I am not responsible for any damage to yourself or others from this 'instructable'. It is your decision to make this project. I would strongly advise to get an electrician or some in the 'know' to check out the all of your wiring.
Update: I will be hopefully showing how to install the 'ground' or 'earth' in a few months.
Step 1: Parts List
1 X Solar Charge controller £15
2 meters of 15amp cable ( Already had)
1 X 15ah battery £20
8 X Spade connectors £1
1 X Power Inverter ( Above the wattage of the the equipment you use ) £30
2 X 13amp switched fuseways £4
1 X RCD ( Already had)
2 X 13amp wall sockets £ 4
5 meters of 23amp mains cable ( Already had)
1 X Energy saving lightbulb and Brakcet ( Already had)
Wire connectors (I used like 20!) £1
Other Items £5