About us

What we do

Watermark Plumbing Supplies provides a top-class service to the public and tradespeople within Yorkshire.

We are an independent merchant with the luxury of being able to source some of the best products and popular brands for you at the most competitive prices we can.

In our industry people are key, we appreciate you can buy items from the internet, maybe even at a cheaper price, but when buying from us, you get the benefit of our people and that makes the difference.

At Watermark we work tirelessly to provide you with consistent service and developing our working relationships with you so they grow and flourish.

Watermark Plumbing Supplies are renowned for

• Our team, on hand, with expert advice, ensuring your budget, gets you the best
• Well-equipped stock of high-quality products
• Stunning and inspirational showrooms
• Competitive pricing
• Credit Account facilities
• Friendly and helpful advice, we have decades of experience within each branch

Our history

Grab a brew and settle yourself; we’ve got our tale to tell

Way back in March 2005, long-time mates Mick Dodson, Glenn Moxon, and John Helliwell—each with plenty of experience in both independent and corporate builder’s merchant circles—opened Watermark in Malton, North Yorkshire. They didn’t only want tosell plumbing supplies; they set out to create a real hub for the trade, built around family values.

After getting off to a strong start in Malton, Watermark expanded quickly:

York, April 2008

Huddersfield, September 2009

In 2009, Karen Thornton joined and, sharing the founders’ vision, soon became Managing Director. Under Karen’s leadership, each branch gained a showroom—making us even more welcoming and offering full bathroom design services.

Despite the heartbreak of losing Glenn in 2012, the spirit and drive he’d helped build remained strong. Karen led the company with heart until 2021, when a fresh leadership team took over: Del Martyn, Kate, and Liz . They brought new energy and ensured Watermark stayed rooted in its people-first ethos.

Kate stepped away in 2024, and today Watermark continues under the capable leadership of Del and Liz, with founders Mick and John still at the helm.

Now—we’ve hit our 20th anniversary! Two decades on, our commitment to quality, community, and that unmistakable Yorkshire warmth hasn’t wavered. With a brilliant team behind us and loyal customers like you by our side, we’re excited for what’s next.