A better way of
doing business

There are many glass manufacturers out there, but there’s only one Clayton Glass. Founded in 1956, we are one of the UK’s largest, oldest and most innovative independent glass producers. We have a responsibility to lead the industry forward and be a shining example of how business should be done – with honesty, pride and respect.


Tonnes of glass
processed each year


Years working
with glass


Deliveries per year
to places all over the UK


staff members

You can feel the difference

We do things a little differently around here – from our unmatched dedication to quality and customer service, to making our 600+ staff feel valued and recognised. The Clayton Difference is visible across every department, in every order and in all our ground-breaking innovations.

The UK’s favourite IGU manufacturer

Operating across six separate sites, we have earned our reputation as the UK’s favourite business-to-business IGU supplier. A multiple winner of IGU Manufacturer of the Year, a founding member of the National Glass Group (NGG) and regularly featured among the London Stock Exchange’s companies to inspire Britain, we forge lasting relationships built on mutual trust, giving every customer the care, attention and respect they deserve.

The Clayton Chronicles


Clayton Glass first opened it’s doors in 1956 to assemble high-quality applications.


Over the next few decades, we gained a reputation for delivering exceptional products with a friendly and knowledgeable customer service.


We moved our HQ from a smaller site in Tanfield (15,000 sq ft) to a larger site (50,000 sq ft), more than tripling our manufacturing space.


We built our first toughening plant, and from this point on we had the ability to produce toughened units on a large scale, meaning our capabilities enhanced. We now have 5.


Our roof glass brand SMARTGLASS was brought to market. A first-of-its-kind roof glass solution that strived to solve the dual problem of conservatories that overheat in the summer and become too cold in the winter.


Clayton acquired its North Shields site.


Clayton Glass moved its HQ from Tanfield (50,000 sq ft) to Harelaw (110,000 sq ft) in County Durham, a site more than double the size.


In 2019, Clayton Glass purchased another glass company, making us a multi-site operation with glass factories in Huthwaite, Blackburn, and North Shields. This purchase made Clayton Glass one of the largest IGU manufacturers in the UK.


Clayton Glass acquires two new sites, one in Scotland and one in Canterbury. The acquisitions make us a 6-site operation capable of producing 65k units per week.

Join forces with the
biggest and the best

Clayton Glass is a founding member of National Glass Group, the UK’s largest buyer which represents leading Independent Glass Processors and glass manufacturers.

Each of our members share the same ethos, meet strict criteria and hold all the appropriate accreditations. They and their customers can both benefit from the unrivalled buying power of a financially strong, independent and owner managed business, together with the broadest product range available.

Find out more about how National Glass Group can support your business: www.nationalglassgroup.co.uk