| TUNNEL LININGS | ABG LTD |
| NEWTON WATERPROOFING SYSTEMS |
| NORMET UK LTD |
| SIKA LIMITED |
| SOPREMA UK |
| WYKAMOL GROUP LTD |
| TUNNEL LININGS Concrete Rapid | NORMET UK LTD |
| TUNNEL LININGS LLDPE Low Density Polyethylene | ABG LTD |
| TUNNEL LININGS Pedestrian Tunnels | FILON PRODUCTS LTD |
| TUNNEL LININGS PVC | SOPREMA UK |
| TUNNEL LININGS Repairable Single Layer Systems | SOPREMA UK |
| TUNNEL LININGS Repairable Vacuum Systems | SOPREMA UK |
| TUNNEL LININGS Sprayed | NORMET UK LTD |
| SIKA LIMITED |
| TUNNEL LININGS Support Frameworks | HALFEN LTD |
| TUNNEL LININGS TPO Thermoplastic Polyolefin | SOPREMA UK |
| TUNNEL LININGS Waterproofing Drainage Layers | ABG LTD |
| NEWTON WATERPROOFING SYSTEMS |
| WYKAMOL GROUP LTD |
