Food inflation hits record high, the internet turns 40 and world tech comes together in Las Vegas

With the rise in food prices reaching a record annual rate in December, Ian is joined by Helen Dickinson from the British Retail Consortium. Plus, as the Consumer Electronics Show gets underway in Las Vegas, he speaks to Nakal Duggal from wireless tech giant Qualcomm – and Chintan Patel from Cisco discusses the 40th birthday of the internet.