The second-highest rise was the M&S Aberdeen Angus rump steak (227g) sold on Ocado, which was up 27.3% to £7. A total of 96 products had price hikes of more than 10%.

While Brent was 0.7% up, stock markets in Asia were largely positive too, despite hits to some metals-focused shares. In London, the FTSE 100 was down fractionally at the open - led lower by ...