I've just received some junk mail from Santander offering 5% return on my money if I open a Premier 50 current account.
1.5 inch high on the front the 5% rateThe small print: Only on the first £2500 (thereafter 0.1%, variable) Only for 1 year For a fee of £10 a month
So, the 5% headline rate is actually 0.2% falling to 0.1% after a year!