There's far more health and safety issues in a supermarket than a bike.
Look at all the slow people who can't even buy some milk without standing there with a dumb expression on their faces because they've forgotten why they're there. What if there was a fire, those people would be risking your life as their brain tried to assimilate the noise and panic.
What about people with trolleys full of crisps or people who stand in the middle of the **** isle after they've met someone they know. How about perfectly able people who park in the disabled spaces or people who leave their trolleys in parking spaces.
No, no no no no. These are the true health and safety issues, customers. Ban 'em.