you can die from riding a bike, baking a cake, cooking chips, drinking too much etc, the list goes on. The point i was trying to make is that you are not sure about safe isolation, which makes swapping a CU considerably more life threatening that installing a PCI card or a HDD. Im not say you can't, im just illustrating the pit falls of doing this job yourself.
Your not alone with being financially challenged, but that isn't a get-out-of-jail card, for anyone. Would you decide not to insure your house/car etc simply cos thing were a bit tight?
I don't wish to seem unfriendly, but the 'im skint' story probably won't endear yourself to anyone, the credit crunch has affected most.
However, should you wish to ignore the unlikely yet possible out come, go for it. BAS has already advised you that you can ignore the potential of a fine. If you could only get that in a written signed statement to this effect, maybe his professional indemnity insurance might coff up if it goes wrong.
what do you think to the following :-
'Bite the bullet, get an electrician to do it safely, legally and you give the design headache to him and get a warranty in return.'
'The notification fees alone for this job make it expensive as a DIY
project.'
'simple, but illegal and dangerous if you don't do it correctly.'
'If it's a simple case of saving money, the likelihood is if you employed an electrician that is registered with a scheme provider it will work out cheaper and safer, than taking this work on yourself and doing it legally.' - PBoD
'Don't forget to inform the LABC. Otherwise if they find out, you will have to pay the fee anyway and if the work is wrong then you may be asked to put it right.' -mfarrow.
'Don't even think about opening the meter. As you have been told, get hold of a competent electrician to do the job. You will save money and still be legal.' -wingcoax
Have you investigated how much your local council charges for notification?
Do you understand their requirements?
have you compared the cost of doing it yourself against how mucha registered spark would charge?
Im not sure, but if your intention is to keep it legal, i don't think you will save as much as you think by DIYing this job.
BTW, as mfarrow has said, if the council find out you will have to pay the fee anyway. I have it in my mind that they will up the price by 20% for 'regularisation of unnotified work'
BTW, nice job on the arcade m/c