Sainsbury’s boosted by return to the office but warns of price rises

Profits are up 4.7% but extra £140m on national insurance bill could mean more expensive groceriesBusiness live – latest updatesFood sales at Sainsbury’s have been boosted by a return to the office and fewer people dining out in restaurants, as the retailer warned of possible price rises as a result of having to pay £140m more next year in national insurance contributions [NICs].The supermarket chain’s pre-tax profits were £356m for the six months to mid-Septe