| 5 | John Dory's | Takeaway/sandwich shop | Lisburn and Castlereagh City | BT8 8BT |
| 5 | Johnston's Stall (Bridge St) | Retailers - other | Derry City and Strabane | BT82 |
| 5 | Johnston's Stall (Lifford Rd) | Retailers - other | Derry City and Strabane | BT82 |
| 5 | Joyce’s Pantry | Other catering premises | Mid Ulster | BT80 |
| 5 | Juice Cup | Other catering premises | Lisburn and Castlereagh City | BT8 6FX |
| 5 | Juniors Bar | Pub/bar/nightclub | Derry City and Strabane | BT82 9AE |
| 5 | Just A Wee Bakery | Takeaway/sandwich shop | Mid Ulster | BT80 8AX |
| Exempt | Just Vape | Retailers - other | Derry City and Strabane | BT82 8EF |
| 5 | K & R Event Catering | Mobile caterer | Lisburn and Castlereagh City | BT8 |
| 5 | K And M McCrystall | Retailers - other | Mid Ulster | BT80 0AY |
| 5 | KFC - Saintfield Road | Restaurant/Cafe/Canteen | Lisburn and Castlereagh City | BT8 8ER |
| 5 | KILLYNURE HOUSE EMI RESIDENTIAL HOME | Hospitals/Childcare/Caring Premises | Lisburn and Castlereagh City | BT8 8DT |
| 5 | KITTIY'S THAI KITCHEN | Other catering premises | Derry City and Strabane | BT82 |
| 5 | KM Fish | Retailers - other | Derry City and Strabane | BT81 7AJ |
| 5 | KNOCKBRACKEN HEALTHCARE PARK | Hospitals/Childcare/Caring Premises | Lisburn and Castlereagh City | BT8 8BH |
| 5 | Karro (canteen) | Restaurant/Cafe/Canteen | Mid Ulster | BT80 8PJ |
| 4 | Kayleigh's Kandy | Retailers - other | Derry City and Strabane | BT82 |
| 5 | Kellys Spar Cookstown | Retailers - supermarkets/hypermarkets | Mid Ulster | BT80 8HT |
| 5 | Kerlins Today Local | Retailers - other | Derry City and Strabane | BT82 0SD |
| 5 | Khyber | Restaurant/Cafe/Canteen | Lisburn and Castlereagh City | BT8 8DT |
| 5 | Kiddiwinkles Care & Learning Centre | Hospitals/Childcare/Caring Premises | Mid Ulster | BT80 8QD |
| 5 | Kidz Play | Other catering premises | Derry City and Strabane | BT81 7HY |
| 5 | Kilikoodu | Other catering premises | Lisburn and Castlereagh City | BT8 |
| 5 | Killen PS Dining Centre | School/college/university | Derry City and Strabane | BT81 7SD |
| 3 | Killeter Chippy | Takeaway/sandwich shop | Derry City and Strabane | BT81 7EL |
| 5 | Killeter Church of Ireland Hall | Other catering premises | Derry City and Strabane | BT81 7EH |
| Exempt | Killeter Heritage & Enterprise Centre | Other catering premises | Derry City and Strabane | BT81 7EL |
| 5 | Killyclooney Cricket Club | Retailers - other | Derry City and Strabane | BT82 0LA |
| 5 | Killymoon Golf Club | Pub/bar/nightclub | Mid Ulster | BT80 8TW |
| 5 | Kinturk Cultural Centre Ltd | Pub/bar/nightclub | Mid Ulster | BT80 0JD |
| 5 | Kirk's Bar | Pub/bar/nightclub | Derry City and Strabane | BT82 9RP |
| 5 | Knockaconny Farm Shop and Deli | Retailers - other | Mid Ulster | BT80 9AR |
| 5 | Knockavoe School & Resource Centre | School/college/university | Derry City and Strabane | BT82 9EB |
| 5 | Krousty Rolls | Other catering premises | Lisburn and Castlereagh City | BT8 |
| 5 | Kumar’s Kitchen | Other catering premises | Lisburn and Castlereagh City | BT8 |
| 5 | LISSAN GO | Retailers - other | Mid Ulster | BT80 9XD |
| 5 | Lafrench coffee | Mobile caterer | Derry City and Strabane | BT82 8ER |
| 5 | Lagan College | School/college/university | Lisburn and Castlereagh City | BT8 6SA |
| 5 | Laid Back Pizza | Mobile caterer | Mid Ulster | BT80 |
| 5 | Late Notice | Other catering premises | Lisburn and Castlereagh City | BT8 |
| 5 | Leaves & Roots Kombucha | Other catering premises | Belfast City | BT8 7TU |
| 5 | Lecky's Vivo Xtra | Retailers - other | Derry City and Strabane | BT81 7BJ |
| 5 | Leigh's Chippy | Takeaway/sandwich shop | Mid Ulster | BT80 0EN |
| 5 | Liberty Church Mid Ulster - Foodbank & Drop in Cafe | Restaurant/Cafe/Canteen | Mid Ulster | BT80 8AX |
| 5 | Lidl (Carryduff) | Retailers - supermarkets/hypermarkets | Lisburn and Castlereagh City | BT8 8DT |
| 5 | Lidl Cookstown | Restaurant/Cafe/Canteen | Mid Ulster | BT80 8BN |
| 5 | Lidl Northern Ireland Limited | Retailers - supermarkets/hypermarkets | Mid Ulster | BT80 8PA |
| 5 | Lidl Strabane | Retailers - other | Derry City and Strabane | BT82 8EW |
| 5 | Lissan Cross Community Playgroup | School/college/university | Mid Ulster | BT80 9UD |
| 5 | Lissan House | Restaurant/Cafe/Canteen | Mid Ulster | BT80 9SW |