Chemical, Oil & Gas PostCode Index - SM
| SM1 1EZ | Marpex Chemicals Ltd. - Sutton |
| SM1 4AF | Honeywill and Stein Ltd - Sutton |
| SM2 7AU | Ocean Technical Systems Ltd. - Sutton |
| SM3 8DD | Comantec Ltd. - Sutton |
| SM6 0NS | RA Watts Ltd - Wallington |
| SM6 7BZ | Bioregional Charcoal Co. Ltd. - Wallington |
| SM6 7DJ | Porter Foods - Wallington |
| SM6 9AA | United Corporation Ltd. - Wallington |