5% beats 4.55% — full stop
The Bank of England base rate is 3.75%. No easy-access savings account pays more than 4.55% AER right now. Nationwide FlexDirect pays 5% — that's 1.25 percentage points above base rate, a spread no savings account matches.
Yes, the FlexDirect caps at £1,500. So you earn £75 a year on that slice. But you also get 1% cashback on debit card purchases, up to £5 a month — that's another £60 a year if you route your spending through it. Total first-year value: £135 from a single account.
Stack this with Lloyds Club Lloyds or Bank of Scotland Classic: 3% on balances between £4,000 and £5,000, and 1.5% on the first £4,000. On a £5,000 balance, that's roughly £90 a year. Add the Nationwide £135 and you're at £225 from £6,500 — an effective rate of 3.46% before you even touch a savings account.
But the real value shows when you put the remaining cash in Chase's boosted saver at 4.5%. A £10,000 overflow there earns £450. Total across the portfolio: £675 on £16,500, which works out to an effective 4.09%.