This is Money: Online supermarket battle intensifies with forthcoming M&S and Ocado tie-up

Since the start of lockdown in March, more Britons have ordered supermarket shopping online to be delivered to their door to dodge the crowds and beat the queuing mayhem. This could be perfect time for Marks & Spencer, who will start its long-awaited tie-up with Ocado at the start of September, as the latter ends its 20 year long relationship with Waitrose. M&S is starting a 'back to basics' assault, lowering the prices on everyday items and it comes as its clothing division continues to struggle. Meanwhile, most major supermarkets are now offering same day – and in some cases, next hour – deliveries, are the days of doing the 'big shop' in large stores over? Simon Lambert, Lee Boyce and Georgie Frost take a look. This week saw a shock rise in the cost of living: why has it happened, where will the inflation figure go next and just how many savings accounts now offering more than 1 per cent interest? Seven US firms - Facebook, Apple, Amazon, Netflix, Google parent Alphabet, Microsoft and Tesla – have seen stratospheric value growth this year. Is it another dotcom bubble waiting to happen? The Department for Transport is mulling over how to allow self-driving cars on the motorway from next year, we take a look at how it works. And lastly, we celebrate our pensions agony uncle Steve Webb, who this week wrote his 200th This is Money column.