| 5 | Cakes N Bakes by Beth | Other catering premises | Lewes | BN8 |
| 5 | Cakes by Ashleigh | Restaurant/Cafe/Canteen | Lewes | BN9 |
| 5 | Candy Box | Retailers - other | Lewes | BN25 3BT |
| 4 | Carafe Coffee Roasters | Restaurant/Cafe/Canteen | Lewes | BN7 2DB |
| 5 | Caribou Candy | Retailers - other | Lewes | BN9 9DD |
| 5 | Cashew Catering | Restaurant/Cafe/Canteen | Lewes | BN8 5BX |
| 4 | Castle Chinese Restaurant | Takeaway/sandwich shop | Lewes | BN7 1XU |
| 5 | Catch of the Day | Mobile caterer | Lewes | BN10 |
| 5 | Cate's Candy | Other catering premises | Lewes | BN10 |
| 5 | Cater Link at Meridian C P School | School/college/university | Lewes | BN10 8BZ |
| 5 | Cater Link at Peacehaven Heights PS | School/college/university | Lewes | BN10 8UZ |
| 4 | Cater Link at Peacehaven School | School/college/university | Lewes | BN10 8RB |
| 5 | Cater Link at Telscombe C P School | School/college/university | Lewes | BN10 7DE |
| 5 | Caterplus @ McCarthy & Stone Eversley Court | Hospitals/Childcare/Caring Premises | Lewes | - |
| 5 | Central Fish Shop | Takeaway/sandwich shop | Lewes | BN10 7HH |
| 5 | Chailey Heritage School | School/college/university | Lewes | BN8 4EF |
| 5 | Chailey School | School/college/university | Lewes | BN8 4PU |
| 5 | Charcoal Grill | Takeaway/sandwich shop | Lewes | BN7 1XG |
| 5 | Charleston House | Restaurant/Cafe/Canteen | Lewes | BN8 6LL |
| 5 | Charleston Lewes | Restaurant/Cafe/Canteen | Lewes | BN7 1AB |
| 5 | Charlotte's Sweet Treats | Restaurant/Cafe/Canteen | Lewes | BN9 |
| 5 | Chartwells at Annecy C P School | School/college/university | Lewes | BN25 4LF |
| 4 | Chaula's Indian Restaurant | Restaurant/Cafe/Canteen | Lewes | BN7 2LP |
| 5 | Cheek & Rosie Rocks (Mobile Vehicle) | Mobile caterer | Lewes | BN10 |
| 5 | Cheek and Rosie Rocks | Restaurant/Cafe/Canteen | Lewes | BN10 |
| 4 | Cheese Please | Retailers - other | Lewes | BN7 2DD |
| 4 | Chen's Garden | Takeaway/sandwich shop | Lewes | BN9 0PJ |
| Exempt | Christ Church | Restaurant/Cafe/Canteen | Lewes | - |
| Exempt | Church Hall | School/college/university | Lewes | - |
| 5 | Church Lane Tearoom | Restaurant/Cafe/Canteen | Lewes | BN25 1HG |
| Exempt | Chyngton Methodist Church | Restaurant/Cafe/Canteen | Lewes | BN25 3ST |
| Awaiting | Cinnamelt | Other catering premises | Lewes | BN9 |
| 5 | Claridge's Cupcakes & Savouries | Other catering premises | Lewes | BN10 |
| 5 | Claydon House Nursing Home | Hospitals/Childcare/Caring Premises | Lewes | BN7 2QT |
| 5 | Clifden House Dementia Care Centre | Hospitals/Childcare/Caring Premises | Lewes | BN25 2QD |
| 4 | Cliff Court Residential Care Home | Hospitals/Childcare/Caring Premises | Lewes | BN10 8ND |
| 5 | Cliffe Refectory | School/college/university | Lewes | BN7 2XH |
| 5 | Cloud Pixie Cakes | Restaurant/Cafe/Canteen | Lewes | BN10 |
| 5 | Co-Operative | Retailers - supermarkets/hypermarkets | Lewes | BN10 8NP |
| 5 | Co-Operative | Retailers - supermarkets/hypermarkets | Lewes | BN25 1LZ |
| 5 | Co-Operative Food Store | Retailers - supermarkets/hypermarkets | Lewes | BN25 2TZ |
| 5 | CoCo Wok | Mobile caterer | Lewes | BN7 |
| 5 | Coffee Corner | Restaurant/Cafe/Canteen | Lewes | BN2 8LJ |
| 5 | Collins Family Restaurant T/A The Grumpy Chef Ltd | Restaurant/Cafe/Canteen | Lewes | BN25 1LX |
| 4 | Community Chef Community Kitchen | Manufacturers/packers | Lewes | BN7 2PE |
| Awaiting | Company of Cooks @ Ridgeview Wine Estate | Other catering premises | Lewes | BN6 8TP |
| 5 | Compass Community School Pinetree Park | School/college/university | Lewes | BN7 3NF |
| 5 | Compass at Barcombe CE School | School/college/university | Lewes | BN8 5DN |
| 5 | Compass at Chyngton School | School/college/university | Lewes | BN25 3ST |
| 5 | Compass at Harbour Primary School | School/college/university | Lewes | BN9 9LX |