I presume i'm allowed to add it if i attach it to the house via a plug. Or get a suitably qualified mate to come round for a cup of tea and attach the final cable to my fuse box?
Though TBH are the police going to come and arrest me for doing some wiring on my house? I can imagine that i might have trouble if i was selling it and had a survey done and didnt have the certificates for it but do they really think they can stop people doing work themselves?