| 5 | Mayfield School | School/college/university | Chorley | PR7 3HN |
| 4 | Mays | Takeaway/sandwich shop | Chorley | PR7 6AU |
| 5 | McDonald's- Tesco | Other catering premises | Chorley | PR7 1NF |
| 5 | McDonalds | Other catering premises | Chorley | PR6 7TY |
| 5 | McDonalds | Other catering premises | Chorley | PR7 1AQ |
| 4 | McKrisps | Takeaway/sandwich shop | Chorley | PR6 0RD |
| 5 | Meadow Bank | Hospitals/Childcare/Caring Premises | Chorley | PR5 8LN |
| Exempt | Meadow Lodge | Hospitals/Childcare/Caring Premises | Chorley | PR5 |
| 5 | Meadow View Childrens Home | Hospitals/Childcare/Caring Premises | Chorley | PR6 8BN |
| 5 | Meg Topping Creative Services Co. | Retailers - other | Chorley | PR7 |
| 5 | Mega Munch | Takeaway/sandwich shop | Chorley | PR7 1BS |
| 5 | Meld @ Brindle Distillery | Other catering premises | Chorley | PR6 8LZ |
| 5 | Meld @ Rivington Brewery Co | Mobile caterer | Chorley | PR6 9HE |
| 5 | Mellors Catering At Eccleston Primary School | School/college/university | Chorley | PR7 5RA |
| 5 | Mellors Catering At Holy Cross RC High School | School/college/university | Chorley | PR7 3LS |
| 5 | Mellors Catering At St Michael's C Of E High School | Restaurant/Cafe/Canteen | Chorley | PR7 1RS |
| 5 | Mellors Catering At Trinity & St Michaels School | School/college/university | Chorley | PR26 9HJ |
| 5 | Millers Barms | Retailers - other | Chorley | PR7 |
| 5 | Millfields Day Services Ltd | Hospitals/Childcare/Caring Premises | Chorley | PR6 8PT |
| 5 | Mitre Hotel | Hotel/bed & breakfast/guest house | Chorley | PR7 3NN |
| 5 | Mix Shawarma | Takeaway/sandwich shop | Chorley | PR7 2LB |
| 5 | Mo's News | Retailers - other | Chorley | PR7 1BN |
| 4 | Money Tree | Takeaway/sandwich shop | Chorley | PR7 6HS |
| 5 | Moreish | Restaurant/Cafe/Canteen | Chorley | L40 3SY |
| 5 | Morrison's Daily | Retailers - supermarkets/hypermarkets | Chorley | PR26 9RJ |
| 5 | Morrisons | Retailers - supermarkets/hypermarkets | Chorley | PR7 2FU |
| 5 | Morrisons Daily | Retailers - supermarkets/hypermarkets | Chorley | PR6 0DR |
| 5 | Morrisons Daily | Retailers - other | Chorley | PR7 3BE |
| 5 | Morrisons Daily | Retailers - other | Chorley | PR7 1XA |
| 4 | Morrisons Daily | Retailers - other | Chorley | PR5 8ES |
| Exempt | Mr Michael Barnes | Other catering premises | Chorley | PR7 3QJ |
| 5 | Mr Michael J Motley | Hotel/bed & breakfast/guest house | Chorley | PR7 5SL |
| 5 | Mr Thompsons Bakery | Retailers - other | Chorley | PR7 1DA |
| 5 | Munchies | Takeaway/sandwich shop | Chorley | PR7 1DA |
| 5 | Murphy's Fish & Chips | Takeaway/sandwich shop | Chorley | PR6 8QS |
| 5 | NSS News | Retailers - other | Chorley | PR25 5SD |
| 5 | Nabzys | Takeaway/sandwich shop | Chorley | PR7 2LH |
| 5 | Nana Jan's | Takeaway/sandwich shop | Chorley | PR7 7JA |
| 5 | Naseeb Euxton Ltd | Takeaway/sandwich shop | Chorley | PR7 6AU |
| 5 | Nature Trail Nursery | Hospitals/Childcare/Caring Premises | Chorley | PR6 0JN |
| 5 | Nature Trail Nursery | Hospitals/Childcare/Caring Premises | Chorley | PR6 8QP |
| 5 | Nature Trail Nursery Euxton | Hospitals/Childcare/Caring Premises | Chorley | PR7 6LP |
| 5 | Nature Trail Nursery Heskin | Hospitals/Childcare/Caring Premises | Chorley | PR7 5LU |
| 5 | Nature Trail Nursery Ltd | Hospitals/Childcare/Caring Premises | Chorley | PR7 1ES |
| 4 | Nature Trail Nursery Railway | Hospitals/Childcare/Caring Premises | Chorley | PR7 6LA |
| 5 | Nelipots Bar | Pub/bar/nightclub | Chorley | PR7 1BU |
| 5 | Nevs Kitchen | Other catering premises | Chorley | PR6 |
| Exempt | New Horizons | Retailers - other | Chorley | PR7 |
| 5 | News And Mags (Pall Mall News) | Retailers - other | Chorley | PR7 2LD |
| 4 | Newsagent Kiosk | Retailers - other | Chorley | PR7 1AQ |