35 years on, one installer explains why AWG is still their top supplier
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October 5, 2026
In addition to manufacturing high-quality uPVC and aluminium windows and doors, Affordable Windows Group (AWG) is committed to delivering the best customer service to installers.
One company which has benefitted from this service for more than 35 years is David H Miller Window Systems, run by David Miller, a Cumbria-based installer with 45 years’ experience in the trade.
David began working with AWG in the early 90s and has watched the company grow into one of the UK’s leading fabricators.
“The company has gone from strength to strength,” David said. “I recently visited the factory and it was incredible to see how much the business has grown, especially over the last 10 years.”
Dedicated to keeping installers supported no matter the distance, AWG ensures orders arrive on time, wherever they’re based.
“I’m 110 miles away from AWG’s headquarters, but two wagons travel to this area twice a week, delivering to local installers,” David explains. “Once you place an order, you get it every week, without fail. It’s that reliability which makes a real difference when you’re running your own business.”
David uses AWG’s full range of products, including the Timberlook flush sash and casement windows and the Decorio aluminium range. With a full order book, it’s important his installations go off without a hitch.
“If I ever have a problem, it’s always put right,” David adds. “There are never any issues, the team are incredibly accommodating and will support me with what I need, without any argument.
“The sales team I deal with are brilliant. If I need something urgently, they’ll bend over backwards for me. That’s one of the main reasons I’ve remained a customer for so long, they’re a great bunch who do what they can to help.”
For installers looking to switch supplier, David’s advice is simple: AWG’s combination of product range, delivery reliability and personal support is hard to match. His loyalty speaks volumes, so do the recommendations he’s made to installers in Carlisle who now order from the company themselves.
Amelia Gaughan, Head of Marketing at AWG, said: “We’re delighted to have installers like David alongside us. It’s incredible to think we’ve been working together for more than 35 years.
“Building lasting relationships like this, with all of our installers, is something we’re incredibly proud of and will continue to be a big focus for us in the future.”
Installers looking for a reliable, quality-driven supplier of heritage uPVC and aluminium windows and doors should visit www.timberlook.com/trade/ or https://www.decorio-doors.com/trade today.
