Shortages of specialist contractors are delaying UK infrastructure and built environment projects, while limited leadership development is leaving many experienced professionals to manage teams without formal support.
Research from Carrington West found that 70% of hiring managers had seen contractor skills shortages affect project delivery, either through delays or by forcing teams to operate under significant strain.
The recruitment consultancy surveyed 482 people, comprising 325 specialist contractors and 157 hiring managers across the UK. Its work spans infrastructure, highways, rail, water, town planning, and property, and it manages approximately 1,200 specialist contractors each week.
Nearly nine in ten hiring managers, 88%, said sourcing specialist contract talent was difficult. More than half, 55%, described skilled contractors as essential to delivering projects or supporting the workload of permanent teams.
Technical shortages are being compounded by a lack of management capability. Leadership and people management were identified as the hardest contractor skills to find by 42% of hiring managers, while six in ten contractors said they managed people formally or informally.
Despite those responsibilities, 80% of contractors had received no leadership or management training. Around four in ten hiring managers also reported that contractors were taking on management duties without formal development or support.
James Fernandes, co-founder and managing director at Carrington West, said: “There is still a strong pipeline of projects across the UK, but many employers are finding it harder to get the skilled people they need to deliver them. The pool of experienced contractors is limited, and some sectors are also dealing with an ageing workforce and a lack of people ready to move into leadership roles.
“One of the biggest concerns is the leadership gap. Too many experienced professionals are being asked to manage teams without the training or support they need, while employers are struggling to develop the next generation of leaders.
“If employers want to avoid more pressure on project delivery, they need to think differently about how they attract, keep and develop specialist contractors. Pay still matters, but flexibility, mentoring, management support and clear career progression are now just as important.”
More than half of contractors said flexibility was more important than pay when considering a new role, and 84% preferred hybrid or fully remote work. Hiring managers reported losing candidates and existing contractors when they could not meet those expectations.
Built environment work cannot always be separated from physical locations. Site inspections, construction activity, safety supervision, and engagement with local communities require attendance, although design, planning, reporting, analysis, and administration can often be organised more flexibly.
Britain’s attempt to accelerate infrastructure approvals will increase the need for planners, engineers, project managers, surveyors, and other specialists. Faster consent cannot translate into completed assets when employers lack the people required to design, supervise, and deliver the work.
The broader mismatch between available skills and changing roles has also weakened the assumption that contractors can always be hired quickly when permanent teams require additional capacity.
Succession is particularly difficult in middle management. Experienced contractors often hold detailed knowledge of assets, regulation, safety systems, delivery partners, and local conditions, and a project can lose continuity when that knowledge leaves without a structured handover.
Technical seniority frequently leads to management responsibility, even where an individual has had no preparation for performance conversations, conflict, workload allocation, wellbeing, or team development. Poor support can reduce productivity and increase turnover at the point when delivery pressure is already high.
Contractors expected to lead people require access to management development, mentoring, and project leadership support. Their employment status does not reduce the operational risk created by weak supervision or unclear accountability.
Workforce planning also needs to extend beyond individual projects. Organisations that recruit only when a programme reaches a critical stage repeatedly compete for the same specialists, often at short notice and at higher cost.
Framework agreements, talent communities, graduate routes, returner programmes, and structured knowledge transfer can reduce some of that volatility. Employers may also need to identify which capabilities must remain permanently within the organisation and which can be sourced for defined periods.
Pay remains influential where scarce expertise is required urgently, but compensation alone will not secure the strongest candidates. Predictable assignments, professional autonomy, flexible working, clear scope, reliable payment, and access to progression all affect whether a contractor accepts or remains in a role.
Public sector clients and large contractors will also need to test workforce capacity while programmes are being designed. Unrealistic timetables or procurement arrangements that transfer excessive risk can make projects less attractive to experienced specialists.
The UK has a substantial infrastructure pipeline, but capital and planning approval do not deliver assets without skilled people. Leadership capability, succession, flexibility, and contractor experience now sit alongside engineering expertise as determinants of whether projects remain on schedule.
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