The maths doesn't lie
The Bank of England base rate sits at 3.75% after December's cut. Easy-access savings accounts have responded, but the best still pay well above base rate. Tembo's HomeSaver leads at 4.55% AER, with Chase offering 4.5% on its boosted saver for the first year.
Now compare that with the current account landscape. Nationwide FlexDirect: 5% on up to £1,500 — maximum annual interest £75. Lloyds Club Lloyds: 3% on balances between £4,000 and £5,000, and 1.5% below that. Bank of Scotland Classic: identical to Lloyds, because it's the same bank with different branding.
Put £10,000 in a 4.55% easy-access saver: you earn roughly £455 a year. Put that same £10,000 across the best current accounts and you might scrape together £200 if you manage the pay-in requirements perfectly every month.