| 5 | Kelsterton Under 5's | Hospitals/Childcare/Caring Premises | Flintshire | CH5 4XA |
| 5 | Key Fish & Chip Shop | Takeaway/sandwich shop | Flintshire | CH5 2AA |
| 5 | Kim's Sandwich Shop | Takeaway/sandwich shop | Flintshire | CH5 2DT |
| 5 | King Vape 4 You | Retailers - other | Flintshire | CH5 4DD |
| 5 | Lavender House | Hospitals/Childcare/Caring Premises | Flintshire | CH5 |
| 5 | Lera Mini Market | Retailers - other | Flintshire | CH5 1BX |
| 4 | Level Store | Retailers - other | Flintshire | CH5 3JR |
| 5 | Li'l Angels Day Nursery | Hospitals/Childcare/Caring Premises | Flintshire | CH5 1QJ |
| 5 | Lidl | Retailers - supermarkets/hypermarkets | Flintshire | CH5 4DD |
| 5 | Little Stars (Deeside) Ltd | Hospitals/Childcare/Caring Premises | Flintshire | CH5 2LA |
| 5 | Llys Eleanor | Restaurant/Cafe/Canteen | Flintshire | CH5 1QU |
| 5 | Londis | Retailers - other | Flintshire | CH5 3LZ |
| 5 | Lovage and Rosemary | Mobile caterer | Flintshire | CH5 |
| 4 | M n S Late Shop | Retailers - other | Flintshire | CH5 3BS |
| 5 | Makro Self Service Wholesalers Ltd | Distributors/Transporters | Flintshire | CH5 2DW |
| Awaiting | Mango Tree | Takeaway/sandwich shop | Flintshire | CH5 1SX |
| 5 | Mars Jones Ltd | Distributors/Transporters | Flintshire | CH5 2QP |
| 5 | Mars Jones Ltd | Distributors/Transporters | Flintshire | CH5 2NS |
| 5 | McDonald's Restaurants Ltd | Restaurant/Cafe/Canteen | Flintshire | CH5 1TP |
| 5 | McDonalds | Restaurant/Cafe/Canteen | Flintshire | CH5 1QJ |
| 5 | McLeans Pub | Pub/bar/nightclub | Flintshire | CH5 2DA |
| 4 | Medina Supermarket | Retailers - other | Flintshire | CH5 1BY |
| 5 | Mel's Amazing Cakes | Other catering premises | Flintshire | CH5 |
| 4 | Melrose Inn | Pub/bar/nightclub | Flintshire | CH5 1LR |
| 5 | Midshire Catering Services Ltd | Restaurant/Cafe/Canteen | Flintshire | CH5 2NR |
| 5 | Mixed European Store | Retailers - other | Flintshire | CH5 1SU |
| 5 | More Local Express | Retailers - other | Flintshire | CH5 4QN |
| 5 | Morrisons | Retailers - supermarkets/hypermarkets | Flintshire | CH5 4WL |
| 5 | Morrisons Daily | Retailers - supermarkets/hypermarkets | Flintshire | CH5 4TS |
| 5 | Mr Hussain Hamad - Ice Cream Van | Retailers - other | Flintshire | CH5 1AB |
| 5 | Mr D Kajari - Ice Cream Van | Retailers - other | Flintshire | CH5 1AB |
| 4 | Mr F Dibrino - Ice Cream Van | Retailers - other | Flintshire | CH5 1AB |
| 5 | Mr N Mahmood | Retailers - other | Flintshire | CH5 1AB |
| 5 | Mr Nuradin Anan | Retailers - other | Flintshire | CH5 1AB |
| 5 | Mr O Jalal - Ice Cream Van | Retailers - other | Flintshire | CH5 1AB |
| 5 | Mr P Angilletta - Ice Cream Vehicle M955 ETU | Retailers - other | Flintshire | CH5 1AB |
| 5 | Mr Roberto Del Sole - Ice Cream Van | Retailers - other | Flintshire | CH5 1AB |
| 5 | Mr Swara Kader Hussein Ice Cream Van | Retailers - other | Flintshire | CH5 1AB |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 3PY |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 4SN |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 1NG |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 3RQ |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 2HH |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 1AS |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 3AU |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 1TF |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 1HP |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 1JD |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 4NE |
| 5 | NEWydd Catering & Cleaning Ltd | School/college/university | Flintshire | CH5 4QL |