- Heywood Williams Group PLC
Market leader in the £4bn UK PVC windows, doors and conservatories market.
- K2
Highest quality conservatory roof systems with durable, colour-stable materials in a wide range of designs.
- Float Glass Industries
The largest, independent glass distributor in the UK
- Door Panels PLC
Europe's largest and longest established manufacturer of door infill panels to the double glazing industry.
- Mila UK Limited
One of Europe's largest suppliers of hardware to the PVC-U, timber and aluminium window and door industries.
- FENSA
The Fenestration Self-Assessment Scheme for companies that install windows and doors in dwellings.
