The survey is reported in the Daily Telegraph as well and is a study made by UCL(University College, London).
Researchers surveyed 10,000 people to find out what they were doing on a weekly basis from September to November. During that time 900 of them were diagnosed with COVID.
They found that travelling by bus increased your chance of getting Covid by 30%, travelling by taxi +19%, by train +18%, tube +/-0.
There was no evidence of extra risk from going to the theatre, cinema, concert or sports event, nor from visiting hairdresser or other beauty care facility.
However, going to arestaurant or cafe increased your risk by 29%, visiting a pub or similar facility more than twice a week +28%, going to a party 27%, the same increased risk as going to the gym.
They no where mention supermarket visits, just say that 'shopping' doubles the risk of getting the disease.
Now shopping covers a wide variety of transactions and includes visiting supermarkets, but also visiting every other kind of retail outlet, from £ shops to Vintage clothes shops. What proportion of shopping events are supermarket visits, I am not sure.
I do a weekly supermarket trip. I also go to an outdoor market and this week went to Superdrug, Holland & Barrett and a sewing shop. The supermarket shop was only one of 5 shopping units I visited.
Remember, they are not investigating where or how someone picked up COVID. Merely listing the activities they were more likely to have taken part in if they caught it, compared with those that didn't