As I read it . . .
Burnley Savings And Loans Ltd [informally a.k.a. 'Bank on Dave'] isn't (legally) a bank. Instead, it's a broker bringing savers and borrowers together. So when you place money with the company you're actually lending it directly to a borrower, who promises to repay the loan with interest:
http://www.burnleysav...dloans.co.uk/savings/
Obviously there's a risk that the person (or firm) who has borrowed your money won't pay it back. The only guarantee offered appears to be a personal one from the guy who runs this company:
http://www.davidfishwick.com/aboutus.php
If he's got his sums right (and he's as financially sound as his company's website likes to portray him) you'll have no worries. But, without access to his bank statements, can you really be sure that he's got the personal wealth to honour all of those guarantees if the default rate on loans is actually a lot higher than his business plan has assumed?
Chris