NatWest Group shares tumbled 16% at market open after the bank said an investigation into the handling of the accounts of Brexit campaigner Nigel Farage found that their closure was lawful; and cut its full-year net interest margin guidance, following peer Barclays earlier this week.

At 0709 GMT, shares were down 33.3 pence to 172.5 pence, their lowest price since early 2021.