The bakery scooped the top prize at the awards ceremony, which was held at Wembley Stadium and attended by more than 350 guests.
Agnes Gabriel-Damaz, managing director of The Polish Bakery, collected the award from former Blue Peter presenter Konnie Huq, who hosted the ceremony.
Damaz told British Baker that it was fantastic to win the award and she was proud the judges had recognised the bakery’s efforts.
“Through this award, we will be able to reach a wider public and it gives us a boost for the future of the company,” she said. “We have been based in Park Royal from the beginning and have built a business here using only natural sourdough in our breads and no preservatives - something which was unknown in the UK at the time.
“We have been slowly expanding ever since we opened our doors for the first time and, through this recognition, we hope to develop more products and are able to supply to more retailers.”
The Polish Bakery started in 2003 with just a small unit and oven. It now supplies products to major retailers including Waitrose and Tesco.