| 5 | Kay's BUNZ | Retailers - other | King's Lynn and West Norfolk | PE30 |
| 5 | Kerala Kalavara | Restaurant/Cafe/Canteen | King's Lynn and West Norfolk | PE30 5ES |
| 5 | Kiev Coffee | Retailers - other | King's Lynn and West Norfolk | PE30 |
| 4 | King | Takeaway/sandwich shop | King's Lynn and West Norfolk | PE30 3EQ |
| Awaiting | King's Bakes And Cakes | Retailers - other | King's Lynn and West Norfolk | PE30 |
| 5 | King's Butchers | Retailers - other | King's Lynn and West Norfolk | PE30 5JP |
| 5 | King's Lynn Academy | School/college/university | King's Lynn and West Norfolk | PE30 4QG |
| 5 | King's Lynn Christian Fellowship | Other catering premises | King's Lynn and West Norfolk | PE30 1QD |
| 5 | King's Lynn Conservative Club | Pub/bar/nightclub | King's Lynn and West Norfolk | PE30 5PY |
| 5 | King's Lynn Discounts | Retailers - other | King's Lynn and West Norfolk | PE30 2AY |
| 5 | King's Lynn Evangelical Church | Other catering premises | King's Lynn and West Norfolk | PE30 4EA |
| 5 | King's Lynn FC Catering | Restaurant/Cafe/Canteen | King's Lynn and West Norfolk | PE30 5PB |
| Exempt | King's Lynn Foodbank | Retailers - other | King's Lynn and West Norfolk | PE30 5DS |
| Exempt | King's Lynn Masonic Centre | Other catering premises | King's Lynn and West Norfolk | PE30 2ND |
| 4 | King's Lynn Mini Mart | Retailers - other | King's Lynn and West Norfolk | PE30 2AY |
| 5 | King's Lynn Night Shelter | Restaurant/Cafe/Canteen | King's Lynn and West Norfolk | PE30 1NT |
| 5 | King's Lynn Nursery School | Hospitals/Childcare/Caring Premises | King's Lynn and West Norfolk | PE30 5PT |
| 5 | King's Lynn Tandoori | Restaurant/Cafe/Canteen | King's Lynn and West Norfolk | PE30 4EZ |
| Exempt | King's Lynn Town Hall | Other catering premises | King's Lynn and West Norfolk | PE30 5DQ |
| Exempt | Kings Lynn Foodbank (Warehouse) | Retailers - other | King's Lynn and West Norfolk | PE30 2HZ |
| 5 | Kings Lynn Residential Home | Hospitals/Childcare/Caring Premises | King's Lynn and West Norfolk | PE30 1PW |
| 3 | Kings Town Market | Retailers - other | King's Lynn and West Norfolk | PE30 5QH |
| 5 | Kirsty's Kakes | Other catering premises | King's Lynn and West Norfolk | PE30 |
| 5 | Knights Hill Hotel And Barn | Hotel/bed & breakfast/guest house | King's Lynn and West Norfolk | PE30 3HQ |
| 1 | Kubus Market | Retailers - supermarkets/hypermarkets | King's Lynn and West Norfolk | PE30 |
| 5 | Lai Ying Court | Takeaway/sandwich shop | King's Lynn and West Norfolk | PE30 3TE |
| 5 | League of Friends Shop QEH | Retailers - other | King's Lynn and West Norfolk | PE30 4ET |
| 5 | Legges Little Luxuries | Other catering premises | King's Lynn and West Norfolk | PE30 |
| 5 | Lidl UK GMBH | Retailers - supermarkets/hypermarkets | King's Lynn and West Norfolk | PE30 1AS |
| Exempt | Linnets In The Community | Restaurant/Cafe/Canteen | King's Lynn and West Norfolk | PE30 5PB |
| 5 | Little Bunnies Day Nursery | Hospitals/Childcare/Caring Premises | King's Lynn and West Norfolk | PE30 4NE |
| 5 | Little Sharks Soft Play | Restaurant/Cafe/Canteen | King's Lynn and West Norfolk | PE30 4LP |
| 4 | Live & Let Live Public House | Pub/bar/nightclub | King's Lynn and West Norfolk | PE30 5PL |
| 5 | Loke Fish Bar | Takeaway/sandwich shop | King's Lynn and West Norfolk | PE30 2AY |
| 5 | London Porter House | Pub/bar/nightclub | King's Lynn and West Norfolk | PE30 5EU |
| 4 | Lord Napier | Pub/bar/nightclub | King's Lynn and West Norfolk | PE30 5QT |
| 5 | Lost Lounge | Restaurant/Cafe/Canteen | King's Lynn and West Norfolk | PE30 1DP |
| Exempt | Lower Farm Nursing Home | Hospitals/Childcare/Caring Premises | King's Lynn and West Norfolk | PE30 |
| 5 | Luco Wellness Ltd | Takeaway/sandwich shop | King's Lynn and West Norfolk | PE30 |
| 5 | Lula's Burger And Barbecue | Mobile caterer | King's Lynn and West Norfolk | PE30 4EZ |
| 5 | Lunchtime Company Ltd | School/college/university | King's Lynn and West Norfolk | PE30 4AY |
| 5 | Lynn Brewery | Manufacturers/packers | King's Lynn and West Norfolk | PE30 |
| 5 | Lynnsport | Restaurant/Cafe/Canteen | King's Lynn and West Norfolk | PE30 2NB |
| 4 | M & A Fruit And Vegetables | Retailers - other | King's Lynn and West Norfolk | PE30 1DP |
| 5 | MERKUR Slots | Other catering premises | King's Lynn and West Norfolk | PE30 1DP |
| 5 | Maggie's Specialty Cake Toppers | Other catering premises | King's Lynn and West Norfolk | PE30 |
| 4 | Mahrad | Retailers - other | King's Lynn and West Norfolk | PE30 4PQ |
| Exempt | Majestic Cinema | Retailers - other | King's Lynn and West Norfolk | PE30 1EJ |
| 5 | Majestic Wine Warehouse Ltd | Retailers - other | King's Lynn and West Norfolk | PE30 4ND |
| 5 | Maltings Q Club | Pub/bar/nightclub | King's Lynn and West Norfolk | PE30 1NQ |