it's not it's own "national bank"
Bank of England is a private company pretending to be a government one
just like the Federal Reserve Bank in US - it isn't federal and has no reserves - it is illegal even as it goes against the constitution
both are Central Banks - B I S is the bank in Switzerland that controls all the other Central Banks
just get wells fargo and greek bank,you should be fine
Everyone has to pay interest on borrowed money, otherwise the bank would not lend it.
The Treasury borrows money by issuing gilts which investors, British or foreign, can buy. Interest is paid on these. The Bank of England buys and sells gilts, buying some from UK investors when it's needed to boost the economy by releasing the investors' money. The BoE transfers the interest it earns on gilts to the Treasury, but only while this is consistent with maintaining its cash reserves.