The Government-backed National Savings & Investments (NS&I) made several rate increases to its Guaranteed Growth Bond range today.
These are fixed rate bonds, and its one year fixed savings account now offers a market-leading 6.20% AER. In comparison, the next best rate on the market comes from Habib Bank Zurich at 6.03% AER.
https://moneyfactscompare.co.uk/news/savings/nsi-makes-market-leading-fixed-rate-increases/