SEO leads heat up for domestic boiler pioneers

Glow Worm Screenshot


Glow-worm have been providing reliable heating and energy products for over 80 years. They originally began producing boilers back in 1934 at the Derwent Foundry in Derbyshire, and are now one of the leading heating manufacturers in the UK.

The Brief

The brief Koozai received was simple and clear, but challenging in such a competitive market. The task was to help increase organic traffic and sales.

Glow Worm Image

The Challenge

  • Raise awareness of the Glow-worm brand, particularly in the homeowner market
  • Help homeowners find an installers page
  • Increase leads from the website through organic search
  • Increase installer sign-ups to the Club Energy site

How We Helped

The strategy focused on two main target audiences: homeowners and installers. It was imperative for us to increase organic traffic to assist in these two key areas and to provide these two audience types with relevant and useful information. We achieved this by addressing and implementing fundamental on-page changes to ensure URLs were optimised for key and relevant search terms. We then addressed technical SEO, including aspects such as page speed, to ensure crucial elements were functioning correctly.

Glow Worm Screenshot
Glow Worm Screenshot

What Happened Next

The on-page and technical activity has seen dramatic improvements in Glow-worm’s overall rankings and site visibility. These encouraging results have enabled the brand to meet its targets and succeed in a highly competitive sector.


Glow-worm achieved a 33% increase in organic traffic, and a 33.44% increase in leads. Koozai continues to optimise the site and build Glow-worm’s authority to strengthen the domain for long-term success.

The proactive nature of Koozai’s work has given us exceptional results in just over six months. The rise in organic traffic has been invaluable in raising awareness of our brand and attracting more leads.

We have been thoroughly impressed with Koozai’s approach and professionalism and we look forward to seeing these positive results grow as we move ahead with our campaign.

Sonia Glover Marketing Communications Manager
  • Leads increased by 33.44%
  • Average SERP position 5th
  • Organic traffic increased by 33%

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