Hi
I have just looked on the Financial Service Authority (FSA) website and followed the links through on Savings. Apparently the sum guaranteed is £35,000.00 if a Bank or Financial Institution registered with the FSA in the UK goes under.
So it would appear that the sum guaranteed is £35,000 per Bank or Institution no matter how many Accounts that Total Amount is spread across, within that Bank or Institution.
I got this info having followed this link - paste it into your browser
http://www.moneymadeclear.fsa.gov.uk/products/savings/savings.html
or simply follow through the links on Savings from the FSA website yourself.
So to summarise do not put more than £35,000 into any one Bank or Institution! And you will have to check that any place you intend to invest is not a subsidiary or part of anywhere else that you might already have money invested.
All Trading Companies in the UK have to publish their details, so although sometimes it is not easy, you can generally find out whether a Company is part of another Company by searching. Although not easy these days with all the tie ups, share buys in, cross-deals and so on.
Maybe we should all be checking at Companies House and doing Company Searches, not cheap, just to see who it is safe to invest with. I see a minefield. Be careful.