Phil Palmer had only been manager of Asda High Wycombe for a week when he won the Top Store award this time last year.
Palmer dedicated the award to his staff who welcomed him to the store and impressed him with their hard work.
Since then the store has gone from strength to strength.
"Over the course of a year, sales growth has increased exceptionally well. I put it down to the hard work and drive of our staff members," said Palmer.
He is proud of how the Asda store has progressed.
"A number of vacancies have been filled and people now want to join the store. Team leaders have also been promoted to management roles," he added.