"Overall, our customers have been very receptive. Many customers tell us how they look forward to receiving their free coffee.
"Recently we received a comment regarding our incentive programme and, because of that comment, from early November we will be taking our programme to the next level where all of our hot drinks will be served in bio-degradable cups," Mrs Leathem said.
Checkout staff make shoppers aware of the coffee offer. As a result, the store is giving away an average of 120 coffees a week.
Mrs Leathem says the programme cost has been subsidised by the reduced number of plastic bags needed; averaging 8000 to 10,000 fewer bags a week.
"Although it is still a cost to our business, we believe the impact on our environment and customer satisfaction far outweighs a monetary one."
People who don't drink coffee can choose hot chocolate or one of the teas available.
- The supermarket is giving away about 120 coffees every week and has been using 8000 to 10,000 fewer bags each week.