WWe are excited to announce the acquisition of Davie + McCulloch. This move strengthens our expertise, expands our capabilities, and allows us to deliver even greater value to our clients across the UK.

We are pleased to announce the acquisition of Davie + McCulloch, a respected Glasgow-based building services consultancy and M&E engineering firm. This strategic acquisition represents a key milestone in our continued growth journey, positioning us to deliver even greater value to our clients. 

Since our management buyout in 2021, we have achieved significant growth, boosting turnover from £8 million to over £14 million, while expanding to 8 offices across the UK and growing our team to 150 staff members. This acquisition reinforces our ambition to continue the expansion of our capabilities and further establish our position as a leader in engineering consultancy.

Founded in 1957, Davie + McCulloch brings a wealth of expertise in Higher Education, Secure Accommodation, and Defence sectors. Their established reputation and track record complement Wallace Whittle’s existing strengths, creating new opportunities to serve a broader client base.

“This acquisition is an important step forward in our growth strategy. Davie + McCulloch’s expertise and values align closely with our own, and we are confident this partnership will enhance our ability to deliver exceptional results.”

Allan McGill, Managing Director – Wallace Whittle

All staff from Davie + McCulloch will integrate into our Glasgow office, ensuring continuity and collaboration during the transition. While the Davie + McCulloch name will remain in the short term, both teams are already working closely to ensure a seamless integration and alignment of expertise. 

This acquisition is expected to propel Wallace Whittle beyond the £15 million turnover milestone in 2025, increasing our team to 160. Plans are also currently underway to establish two new regional offices, with the potential for further acquisitions to support our long-term growth ambitions in the future. 

“Our success since 2021’s MBO has been driven by organic growth,” McGill continued. “However, this acquisition accelerates our plans by adding a talented team and a well-established client network, positioning us to further strengthen our market presence.”

We remain steadfast in our commitment to sustainability and innovation. With our ESG & Sustainability team continuing to play a pivotal role in delivering environmentally conscious solutions across a range of sectors, from healthcare and commercial to residential and leisure. 

Building on this foundation, we have recently expanded our ESG capabilities to further support our clients’ sustainability ambitions. Our bespoke digital dashboard, PathWWay, enables us to provide enhanced services, offering actionable insights into building performance, climate resilience, and net-zero strategies. 

As we embark on this exciting new chapter, we are committed to continued growth and the seamless integration of Davie + McCulloch into Wallace Whittle. This acquisition is a significant step forward in our mission to deliver industry-leading services while upholding the highest standards of quality, standardisation, and sustainability.

We are grateful for the continued support of our clients, partners, and team members as we move forward on this journey. We look forward to welcoming in the new team, as well as the new opportunities ahead. 

As Wallace Whittle continues to grow, we invite you to explore current career opportunities with us. If you’re interested in joining a dynamic and forward-thinking team, or if you have a project that could benefit from our expertise, we encourage you to get in touch. 

PathWWay is our bespoke approach which enables organisations to highlight their ESG and Sustainability ambitions across a range of criteria, including governance, energy and environmental, and incorporating broader aspects such as social value and ecological impact.

Unlike traditional approaches, PathWWay goes beyond compliance by offering a bespoke, stakeholder-led approach that aligns with client-specific goals and priorities.

PathWWay can be used both to define and develop ESG strategy at the organisational level and in the delivery of projects at multiple levels, including masterplans, buildings and other client initiatives. The model defines key performance indicators across a range of themes and priorities and provides the mechanism both to report performance at a corporate level and to transpose into project requirements.

PathWWay highlights client ambition through measurements against the definition of performance targets at 3 levels

Level 1: Conform

Typically, a regulatory minimum i.e. minimum planning requirements or building regulations.

Level 2: Optimise

Aiming to achieve the best possible level for the specific activity. This is aiming for Current Best in Class performance.

Level 3: Innovate

Target which is achievable, but challenging, and likely requiring a level of innovation or new thinking. Designed to deliver long-term value.

Designed to be robust yet flexible, PathWWay integrates seamlessly with existing systems and delivers valuable insights via a dynamic digital dashboard. Dashboards can be project by project, or at organisational level and can be displayed on screens or accessed from anywhere so you can track and display progress.

Why PathWWay Solves Real-World Challenges

Organisations today face increasing pressure from stakeholders, regulators, and the market to demonstrate their commitment to sustainability. However, navigating the ESG landscape can be daunting, given the complexity and variety of hundreds of standards, certifications, and expectations.

PathWWay addresses these challenges by offering:

1. Tailored Solutions: PathWWay is not a one-size-fits-all certification scheme. It defines performance targets specific to your sector, goals, and operational context, making it a highly customised approach.
2. Strategic Alignment: : Whether for business strategy, portfolio management, or individual projects, PathWWay ensures alignment with key regulatory, planning, and stakeholder requirements.
3. Three Levels of Ambition: From conforming to regulations, optimising best-in-class practices, to driving innovation, PathWWay sets clear levels of ambition for every goal, enabling organisations to scale their efforts effectively.
4. Iterative and Insight-Driven: Unlike static certification models, PathWWay is iterative, allowing teams to test, refine, and improve their ESG initiatives continuously.
5. Integrated Reporting: By connecting directly to leading ESG reporting frameworks, PathWWay simplifies compliance and showcases progress through standardised, insightful reports.

WWe are on our own PathWWay

WWe are committed to our own ESG Goals and are using PathWWay to deliver our ESG strategy.

It is built around seven themes, each underpinned by a number of key priorities. Activities across the business are aligned to the themes and priorities including Governance, Energy/Carbon, Wellbeing & Social Value.

Additionally, we are seeking other accreditation and will be sharing our journey as we go, highlighting a commitment to a beyond compliance level across all aspects of our ESG agenda.

Why You Should Get in Touch

The world of ESG can be overwhelming and often organisations are on the wrong path, working on accreditations that don’t always lend value to their goals. PathWWay is a bespoke, consultancy process that equips organisations with the knowledge and modelling to lead in sustainability. By adopting PathWWay, you will

• Enhance reputation and trust among stakeholders by transparently demonstrating ESG commitments.
• Mitigate risks and secure access to funding through improved compliance and forward-thinking sustainability practices.
• Drive operational efficiency and uncover opportunities for innovation that deliver long-term value.
• Find cost savings through energy-efficient systems, water conservation and waste reduction, which lower operational costs.
• Increase value, as ESG-compliant buildings often attract higher property valuations and rental premiums due to their efficiency and lower environmental impact

Discover how PathWWay can redefine your organisation’s ESG journey. Connect with our ESG & Sustainability experts, Nick Hayes, George Rowberry and Monika Munzinger to begin your tailored PathWWay process. Explore our model’s impact and unlock your pathway to sustainability excellence.

For more information, visit our ESG & Sustainability page or reach out directly.