Top 150 Consultants 2026: What the Latest Rankings Tell Us About the Future of UK Construction Consultancy

Atkins Search analysis of Building magazine’s Top 150 Consultants 2026 report, published in September 2026

The release of Building’s Top 150 Consultants 2026 provides a valuable snapshot of the UK construction consultancy market and highlights the firms, sectors and strategies driving growth in an increasingly complex environment. According to the rankings, the UK’s largest consultancies have continued to demonstrate resilience, with many reporting growth in both fee income and headcount despite ongoing economic uncertainty and changing client priorities. [building.co.uk]

At Atkins Search, we work closely with consultancies, contractors, developers and client-side organisations across the built environment. From our perspective, the 2026 rankings reinforce several trends we’ve been seeing firsthand across the market.

Strong Growth Continues at the Top

The market remains dominated by major multidisciplinary consultancies, with AtkinsRéalis retaining the number 1 position after increasing UK fee income from £1.56bn to £1.72bn. Mott MacDonald remains 2nd with more than £1.5bn in UK fees, while WSP, AECOM and Arup complete the top 5. [building.co.uk]

What’s particularly notable is the continued growth of firms operating across infrastructure, transportation, energy and major programme delivery. With government investment remaining focused on infrastructure renewal, energy transition and long-term asset management, the consultancies best positioned in these sectors continue to outperform the wider market. [building.co.uk]

Atkins Search View:
Demand for experienced professionals within infrastructure, project management, programme controls, commercial management and specialist engineering disciplines remains exceptionally strong. Clients continue to compete aggressively for talent capable of delivering complex projects and managing increasingly challenging delivery programmes.

Project Management and Cost Consultancy Firms Gain Ground

One of the clearest themes emerging from the rankings is the strength of project management and cost consultancy businesses.

Turner & Townsend recorded significant growth, increasing UK fees from £532.7m to £751.6m following its integration with CBRE Project Management, while firms such as Rider Levett Bucknall (RLB), Gleeds, Ridge and Partners and Cumming Group all reported notable increases in fee income. [building.co.uk]

The continued focus on cost certainty, programme assurance and risk management means clients are increasingly relying on experienced project and commercial teams throughout the project lifecycle.

Atkins Search View:

This aligns directly with what we’re seeing across our recruitment assignments. Demand for Quantity Surveyors, Project Managers, Commercial Managers, Project Controls professionals and Cost Consultants continues to outstrip supply in many regions of the UK.

Mergers and Acquisitions Are Reshaping the Market

The report highlights the ongoing influence of acquisitions on market growth. Several firms reported increased turnover following strategic acquisitions, including Cumming Group, Bellrock and Drees & Sommer. Meanwhile, larger global groups continue to strengthen their UK presence through expansion and consolidation. [building.co.uk]

This reflects a broader trend we’ve observed over recent years, with consultancies seeking scale, specialist expertise and geographic reach through acquisition rather than purely organic growth.

Atkins Search View:
Whilst acquisitions create opportunities, they also bring significant recruitment challenges. Integrating teams, retaining key talent and preserving culture are often critical factors in determining whether an acquisition ultimately delivers its intended value.

Regional Growth Is Creating New Talent Hotspots

Beyond London, many firms continue to expand their regional office networks, with several consultancies operating from multiple locations across the UK. The rankings demonstrate the importance of regional markets in supporting future growth and project delivery capability. [building.co.uk]

As investment spreads across major infrastructure programmes, local authority regeneration schemes, advanced manufacturing, life sciences and defence projects, regional offices are becoming increasingly strategic rather than simply delivery hubs.

Atkins Search View:
We’re seeing particularly strong hiring activity across the Midlands, Yorkshire, the North West and the South West. Employers that embrace flexible working, clear career progression and competitive reward packages are generally gaining a significant advantage in attracting talent.

Talent Remains the Sector’s Biggest Challenge

While the Top 150 rankings focus on financial performance, workforce figures reveal another important story. Many of the UK’s leading consultancies have increased staff numbers alongside fee growth, highlighting the industry’s ongoing focus on talent acquisition and retention. [building.co.uk]

However, a shortage of experienced professionals continues to impact employers across architecture, project management, quantity surveying, building surveying, engineering and sustainability disciplines.

The challenge facing consultancies is no longer simply finding candidates. It’s attracting, engaging and retaining them in a highly competitive market.

Atkins Search View:
The most successful employers are investing heavily in employer branding, leadership development, employee wellbeing and long-term career planning. Salary remains important, but candidates are increasingly evaluating opportunities based on culture, flexibility, purpose and professional development.

What This Means for 2027

Looking ahead, we anticipate continued growth across:

• Infrastructure and transportation
• Energy and decarbonisation projects
• Data centres and digital infrastructure
• Defence and secure environments
• Project controls and programme management
• Cost consultancy and commercial management
• Sustainability and ESG services

Alongside these growth sectors, artificial intelligence, digital transformation and data-led decision making are likely to become increasingly important differentiators for consultancies seeking to improve productivity and client outcomes. [building.co.uk]

Final Thoughts

The Building Top 150 Consultants 2026 rankings demonstrate a consultancy sector that remains ambitious, resilient and growth-oriented despite ongoing market challenges. The firms achieving the strongest performance are those combining sector expertise, strategic growth plans and a clear commitment to attracting and retaining the very best talent. [building.co.uk]

At Atkins Search, we expect competition for experienced construction and property professionals to remain intense throughout 2027. For employers, securing the right talent will continue to be one of the most important factors in achieving sustainable growth. For candidates, the market remains rich with opportunity across consultancy, client-side and contracting environments.