Autumn Budget 2026: what it means for public procurement

On October 28th 2026, the Chancellor of the Exchequer presented his Autumn Budget to Parliament.

From increased defence investment and AI adoption to tighter departmental budgets and new procurement reforms, the announcements could have significant implications for UK public sector suppliers.

This blog breaks down the key announcements, where government spending is growing and falling, and what suppliers need to know to build their public sector pipeline in 2027.

Skip ahead to read about:

• What are the four key takeaways from the 2026 Autumn Budget?
  
  • 1. Public procurement to put British businesses first in 2027
  • 2. Defence spending to surge as other departments face cuts
  • 3. AI procurement boom set to accelerate in 2027
  • 4. Devolution to reshape who controls public sector spending
• Which government departments will see their budgets grow in 2027?
• What are the key public investment areas outlined in the Budget?
• Where is public spending under pressure?
• Conclusion: Which government departments should suppliers target in 2027?

What are the four key takeaways from the 2026 Autumn Budget?

1. Public procurement to put British businesses first in 2027

The government is doubling down on using public procurement to support British businesses, create jobs and strengthen domestic supply chains.

Two recent policy changes have already signalled this direction:

• PPN 026 (The new Social Value Model): 

  Greater emphasis on quality employment, skills and training in Central Government contracts.

• PPN 025 (National Security): 

  Strengthening supply-chain resilience in steel, shipbuilding, AI and energy infrastructure.

The Budget confirms a new National Procurement Policy Statement for March 2027, prioritising quality jobs, fair pay and skills development.

It also promises a new definition of a 'UK supplier' by January 2027, distinguishing firms with genuine UK operations from those with little more than a registered UK address.

For suppliers, this reinforces the importance of demonstrating how contracts support British jobs, skills and resilient supply chains.

For Central Government procurement teams, jobs and skills will remain priorities. Local Government and NHS buyers retain greater flexibility over their social value requirements.

2. Defence spending to surge as other departments face cuts

The Defence sector is a major beneficiary, with the Budget confirming how the £15 billion Defence Investment Plan will be funded and reaffirming the ambition to spend 3.5% of GDP on defence by 2035.

Key investments include:

• £5 billion for advanced uncrewed systems, including £400 million for Army drones.

• £300 million for the StormFighter combat aircraft programme.

• Up to £5 billion in investment and lending to strengthen UK defence supply chains.

Defence procurement is also set for reform, with plans to reduce major platform contracting times by two-thirds and explore joint procurement with European allies.

However, this comes at a cost elsewhere. The government will cut other departments' capital budgets by a further 1% from FY27/28 to FY29/30 to help fund defence commitments.

For defence suppliers, this signals opportunities in advanced technologies and domestic manufacturing. Elsewhere, tighter capital budgets could increase competition for available contracts.

3. AI procurement boom set to accelerate in 2027

The Budget announced further investment in AI adoption, cybersecurity and British technology companies.

Key commitments include:

• £120 million for the AI Security Institute and £165 million for a National AI Biosecurity Initiative.

• £154 million to strengthen cyber defences and £40 million for a National Agentic Security Unit.

• £80 million for the Sovereign AI R&D Procurement Scheme.

• £35 million for GovAI and 350m for a Civil Service AI transformation fund.

This comes amid booming public sector AI procurement. Tussell's AI Procurement Tracker found that 453 AI-related contracts worth £1.41 billion were awarded in the first seven months of 2026, already exceeding the £1.18 billion awarded throughout 2025.

Tussell's Tech Titans report also found that SMEs are winning most AI-related contracts by volume, suggesting opportunities for smaller, innovative suppliers to compete with established technology providers.

For suppliers, the opportunity extends beyond AI products. With government targeting substantial administrative savings, solutions demonstrating measurable productivity gains and cost reductions could become increasingly attractive.

4. Devolution to reshape who controls public sector spending

Despite recent delays to local government reorganisation, the Budget reaffirms the government's commitment to devolving spending powers to regional and local authorities.

Key announcements include:

• £285 million for new Good Growth Funds in 2027–28, supporting regional investment.

• A £1.5 billion borrowing facility for Mayoral Strategic Authorities from April 2028.

• Plans to give mayors a share of income tax and business rates, while allowing local authorities to retain more business rates revenue.

The government is also progressing devolution agreements with 10 further areas across England.

For suppliers, devolution is expected to shift decision-making powers and investment priorities, changing which public sector buyers they need to target. However, delays to council reorganisation could create uncertainty over future buying authorities and procurement arrangements.

Which government departments will see their budgets grow in 2027?

The Autumn Budget sets out updated departmental spending plans for the coming years, revealing where government is increasing investment and where budgets are tightening.

Day-to-day spending (RDEL)

Resource Departmental Expenditure Limits (RDEL) cover day-to-day departmental spending, including staffing, administration and public service delivery.

On a like-for-like basis, before technical pension adjustments, RDEL is set to increase by approximately 2.2% in FY27/28, below the forecast consumer price inflation rate of 3.4% for 2027.

Four departments have planned nominal RDEL increases exceeding the 3.4% CPI inflation forecast for 2027.*

• Cabinet Office (+30.8%)

• Department for Work & Pensions (+15.3%)

• Department for Energy Security & Net Zero (+5.0%)

• Department of Health & Social Care (+4.1%)

*This is an indicative comparison, not a formal real-terms measure.

For suppliers in IT, facilities management, consulting and operational services, these figures highlight where spending pressures and opportunities may emerge. However, higher departmental budgets don't necessarily translate into more external procurement.

Capital investment (CDEL)

Capital Departmental Expenditure Limits (CDEL) cover investment in long-term assets, including infrastructure, buildings, equipment and technology.

Overall, CDEL is set to rise from £137.2 billion in FY26/27 to £140.5 billion in 2027–28, an increase of 2.4%.

But departmental priorities are shifting considerably.

The Ministry of Defence's capital budget will grow by approximately 18%, while the Department for Transport sees a 10% increase. Meanwhile, Education, Health & Social Care, and Housing and Communities face reductions.

Preventative Departmental Expenditure Limits (PDEL)

At the 2027 Spending Review, the government plans to introduce a ringfenced spending category called Preventative Departmental Expenditure Limits (PDEL).

This will protect investment in programmes that reduce future demand on public services and generate long-term savings, potentially influencing funding for healthcare, social care and homelessness prevention.

For suppliers, it could strengthen the case for solutions demonstrating measurable long-term savings.

The 2027 Spending Review will provide further clarity on departmental priorities.

What are the key public investment areas outlined in the Budget?

Beyond defence and AI, the Budget identifies several investment priorities that could create supplier opportunities in 2027 and beyond.

Key commitments include:

• Housing and construction: An additional £1.5 billion for around 10,000 social and affordable homes, bringing the Social and Affordable Homes Programme to over £40 billion.

• Quantum technology: £138 million for quantum sensing and positioning technologies across defence, transport and healthcare.

• Skills and apprenticeships: £100 million over two years for local apprenticeship services, plus a requirement for apprentices to comprise at least 3% of the workforce on large government construction and infrastructure projects.

• Public services: £432 million to tackle rough sleeping and a £15 million AI Challenge Prize initially focused on NHS innovation.

The Budget also outlines reforms intended to accelerate infrastructure investment:

• Infrastructure and planning: Measures to reduce delays to major projects, alongside a review of rail infrastructure costs.

• Green Book reform: Changes to how government assesses investment proposals could make it easier to approve projects delivering long-term benefits.

These commitments highlight potential growth markets, although not all funding will translate directly into public contracts.

Where is public spending under pressure?

While some sectors receive additional investment, others face tighter funding and pressure to reduce costs.

Key areas include:

• Clean energy: £1.7 billion in capital grant reductions, including £1 billion from the Warm Homes Plan, £500 million from hydrogen and £200 million from carbon capture. Selected schemes remain protected.

• NHS staffing: Agency staffing expenditure fell £900 million (43%) in FY25/26, reflecting efforts to reduce reliance on temporary workers.

• Central Government administration: Departments must cut administration budgets by 20% in real terms by FY29/30 against FY25/26 levels, up from the previous 16% target.

• Capital investment: A further 1% reduction to departmental capital budgets from FY27/28 to FY29/30 will help fund defence spending.

For suppliers, these pressures could mean fewer opportunities and tougher competition. However, they could also create demand for firms helping government cut costs, improve productivity and deliver services more efficiently.

Conclusion: Which government departments should suppliers target in 2027?

Departmental spending plans indicate where opportunities may emerge, but budget growth alone doesn't tell suppliers which buyers to target.

Even departments facing cuts can offer opportunities where contracts are approaching expiry, new programmes are being developed, or buyers are seeking efficiencies.

To build pipeline for 2027, suppliers need to understand:

• Which departments are planning new projects.

• When existing contracts will expire or be reprocured.

• Which frameworks buyers use to purchase goods and services.

• Where early buying signals are emerging before tenders are published.

Tussell goes beyond publicly available procurement data, combining proprietary market intelligence, historic contracting activity and thousands of pre-tender buying signals. 

This helps suppliers identify target accounts, anticipate opportunities, find the right frameworks and DPSs, and engage with buyers before competitors.

Book a meeting with Tussell to see how you can identify your next target accounts and build pipeline for 2027.