Qualifications
John Williams was the first company in the region to achieve British and European standards for the Manufacture of windows, doors and conservatories.
Our products have been awarded 3 British Standard Institute Kite Marks which certifies them to the highest British Standards. We are only one of a handful of companies in our industry to achieve this status. Your guarantee of excellence from the multi – award winning company you can trust.
The British Standards Institution (BSI) was the first national organization in the world. It is now also a provider of management systems, assessment, and certification and training services.
The BSI Kite Mark is recognised by over 80% of the population. It is the symbol of quality and safety and offers proof that a product and service complies with the relevant specification.
