Johnston Carmichael supports the Denholm Group with its latest acquisition


Campbell Cummings

Campbell Cummings

Corporate Finance Partner

20 June 2025


Johnston Carmichael’s Corporate Finance team has recently provided financial and tax due diligence services to J. & J. Denholm (“the Denholm Group”) on its recent acquisition of WPA Construction Group Ltd and its trading subsidiary Weatherproofing Advisors Ltd (“WPA”).

WPA is a leading UK commercial roofing contractor with more than 30 years of industry expertise. The business is focused on both commercial and industrial refurbishment projects, operating from premises across the UK, including Glasgow, Newcastle, Merseyside, London and Bristol.

Founded over 150 years ago, the Denholm Group is a fifth-generation family business, that has evolved into four divisions: Shipping, Logistics, Seafoods and Industrial Services. 

The acquisition will broaden the Denholm Group’s Industrial Services division capabilities and further strengthen its already large footprint across the UK. WPA will continue to operate under its established name and the management teams will remain unchanged, ensuring seamless continuity in its operations, customer relationships, and service delivery.

Simon Preston, Chief Operating Officer at the Denholm Group, said:

This acquisition is a strong strategic fit and fully aligned with our values. Our shared ambition is to grow WPA to its fullest potential. We've already identified some exciting opportunities to collaborate and we're confident that even more will emerge as we continue this journey together.

Campbell Cummings, Corporate Finance Partner at Johnston Carmichael, said:

We were delighted to support the Denholm Group on its latest acquisition of WPA, a strategically important acquisition which will enhance the Denholm Group’s existing critical engineering support offerings. For over 150 years the Denholm Group has been at the forefront of successful growth across a number of verticals, and we wish the combined business every success going forward.


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