IBonomicsUK 10 Year Infrastructure Strategy
The UK committed at least £725 billion to infrastructure over a decade, aiming to improve productivity, public services and long-run growth.
Key figures
Government infrastructure funding
At least £725 billion
The strategy is backed by at least £725 billion of government funding for infrastructure over the following decade.
Public estate maintenance
At least £9 billion
At least £9 billion was allocated for health, education and justice estate maintenance in 2025-26, rising to more than £10 billion per year by 2034-35.
Infrastructure Pipeline
Around 780 projects
The first Infrastructure Pipeline published in July 2025 contained around 780 public and private projects and programmes representing about £530 billion of investment over ten years.
At a glance
- The UK government published its 10 Year Infrastructure Strategy in June 2025, covering transport, energy, water, digital networks, housing and social infrastructure.
- The strategy is backed by at least £725 billion of government infrastructure funding over the following decade.
- Public investment in infrastructure can raise productivity by improving transport, energy, digital networks and public services, potentially increasing the economy's productive capacity.
- The policy is an example of an interventionist supply-side policy because the government directly funds infrastructure and coordinates long-term investment.
- The economic benefits depend on project selection, delivery, construction capacity and whether public investment successfully encourages additional private investment.
Background
Infrastructure includes the physical and organizational systems needed for an economy to function, such as roads, railways, energy networks, water systems, digital networks, hospitals and schools.
In its 2025 strategy, the UK government argued that infrastructure investment had previously been too uncertain and too low, contributing to weak productivity and making projects more expensive and difficult to deliver. It also identified poor coordination between government, industry and different infrastructure sectors as a problem.
Infrastructure investment can be analysed as an interventionist supply-side policy. These are government policies that directly improve the quantity or quality of factors of production, with the aim of increasing the economy's productive capacity.
Better transport can reduce journey times and make it easier for workers and goods to move between locations. More reliable energy and digital networks can reduce business costs. Investment in hospitals and schools can also improve the quality of public services and, over a longer period, may support labour productivity.
If these effects increase the quantity or productivity of resources available to the economy, long-run aggregate supply (LRAS) can increase. However, this effect is not automatic. Infrastructure only increases productive capacity if projects are useful, completed effectively and used efficiently.
What happened
On 19 June 2025, HM Treasury and the National Infrastructure and Service Transformation Authority published UK Infrastructure: A 10 Year Strategy.
The strategy brought together economic infrastructure, housing and social infrastructure within one long-term plan. Economic infrastructure includes areas such as transport, energy, water, digital networks and flood protection. Social infrastructure includes hospitals, schools, colleges, prisons and courts.
The government committed at least £725 billion of infrastructure funding over the following decade. The strategy also aimed to provide greater certainty about future projects so that construction companies, investors and suppliers could plan investment, employment and training further in advance.
For public buildings, the government said at least £9 billion would be allocated in 2025-26 to maintenance of health, education and justice estates, with annual funding rising to more than £10 billion by 2034-35.
The strategy also created a stronger role for the National Infrastructure and Service Transformation Authority (NISTA), which is responsible for supporting implementation and improving the planning and delivery of major infrastructure projects.
In July 2025, NISTA published an Infrastructure Pipeline containing around 780 planned public and private projects and programmes. The first version represented around £530 billion of identified investment over the following ten years, including approximately £285 billion of government-funded investment.
Timeline
26 January 2025
HM Treasury published a working paper setting out plans for a new 10 Year Infrastructure Strategy.
19 June 2025
The government published UK Infrastructure: A 10 Year Strategy, backed by at least £725 billion of government infrastructure funding over the following decade.
17 July 2025
NISTA published the first Infrastructure Pipeline, containing around 780 planned public and private infrastructure projects and programmes.
Using this in the exam
Use this example when explaining or evaluating interventionist supply-side policies, particularly government investment in infrastructure.
In an explanation paragraph, state that the UK published a 10 Year Infrastructure Strategy in June 2025 backed by at least £725 billion of government infrastructure funding over the following decade. The plan covers transport, energy, digital networks, water, housing and public infrastructure such as hospitals and schools.
Then explain the supply-side mechanism. Better transport can reduce travel times and distribution costs. Reliable energy and digital infrastructure can make businesses more productive. Improvements to schools and hospitals may also improve human capital and labour productivity. If productivity rises, the economy can produce more using its available resources.
On an AD-AS diagram, show LRAS shifting to the right from LRAS1 to LRAS2. This represents an increase in potential output. In the long run, the economy may be able to produce a higher level of real GDP with less inflationary pressure.
You can also use a PPC diagram. Successful infrastructure investment can increase the productive capacity of the economy, shifting the production possibilities curve outwards.
There is also a short-run demand-side effect. Government infrastructure spending is part of government expenditure, G, so spending on construction can initially increase aggregate demand. Do not confuse this with the main supply-side objective. The short-run AD effect comes from government spending, while the long-run LRAS effect depends on the infrastructure increasing productivity or productive capacity.
For evaluation, emphasize that infrastructure spending does not automatically generate economic growth. The size of the benefit depends on whether the government chooses high-return projects, prevents delays and cost overruns, and has enough skilled workers and construction capacity to deliver them.
The strategy can also create a crowding-in effect. Greater certainty about future infrastructure may encourage private firms to invest because businesses expect better transport, energy and digital networks. However, this effect depends on whether private investors believe the projects will actually be delivered.
Syllabus topics
Diagrams to use
Test yourself
Questions this example can answer
- Using a real-world example, explain how investment in infrastructure can increase the productive capacity of an economy.
- Using a real-world example, explain how an interventionist supply-side policy can increase long-run aggregate supply.
- Evaluate the effectiveness of government investment in infrastructure as a supply-side policy.
- Discuss the possible effects of interventionist supply-side policies on economic growth.
- Evaluate the view that government investment is necessary to increase productivity and long-term economic growth.
Evaluation
Arguments in favour
Better infrastructure can increase productivity
Improved transport, energy and digital networks can reduce delays and other business costs. Workers and capital can be used more efficiently, raising output per unit of input and potentially increasing LRAS.
Long-term planning can encourage private investment
Greater certainty about future infrastructure projects allows firms to plan investment, recruitment and training further in advance. If private investment increases alongside public investment, the overall increase in productive capacity can be larger.
Improved connectivity can expand labour and product markets
Better transport links allow workers to reach a wider range of jobs and firms to access larger markets and supply chains. This can improve labour mobility and resource allocation, increasing productive efficiency.
Social infrastructure can support human capital
Investment in hospitals, schools and colleges can improve health, education and working conditions. Over the long run, a healthier and better-skilled workforce may be more productive, contributing to higher potential output.
Arguments against
Infrastructure projects have long time lags
Major rail, energy and public-building projects can take many years to plan and construct. The productivity benefits may therefore appear long after the original spending occurs, making infrastructure unsuitable for producing rapid supply-side improvements.
Poor project selection can create government failure
If political considerations lead to projects with low economic returns, the resources used could have generated larger benefits elsewhere. Expensive infrastructure therefore has a high opportunity cost and does not guarantee an increase in productivity.
Cost overruns can reduce value for money
Large infrastructure projects are complex and can face delays, changing designs and higher construction costs. If actual costs greatly exceed initial estimates, the economic return on public investment falls and taxpayers bear a larger burden.
Construction capacity can limit the effect
If skilled labour, machinery and construction firms are already heavily used, a large increase in public investment can raise wages and construction prices rather than immediately increasing the quantity of infrastructure delivered.
Context and assumptions
The policy affects both aggregate demand and aggregate supply
Government construction spending can raise aggregate demand in the short run through higher G. The long-run supply-side benefit occurs only if the completed infrastructure raises productivity or productive capacity.
Maintenance and new investment have different effects
Repairing existing hospitals, schools or transport systems can prevent productive capacity from deteriorating, while entirely new infrastructure may expand capacity. Both can be valuable, but their economic effects are not identical.
The return depends on where investment occurs
Infrastructure can produce larger productivity gains where poor connectivity or inadequate capacity is already a major constraint. Spending the same amount in an area with little need may generate a much smaller economic return.
Private-sector response matters
One aim of the strategy is to give businesses greater certainty and encourage private investment. If firms respond strongly, public investment may crowd in additional capital. If confidence remains weak, the wider effect may be smaller.
The strategy is a long-term plan rather than a completed outcome
The £725 billion commitment describes planned government infrastructure funding over a decade. Students should not claim that the strategy has already caused a specific increase in UK productivity, LRAS or economic growth.
Key terms
- Interventionist Supply-Side Policy
- Government action that directly increases the quantity or quality of factors of production in order to increase productive capacity.Taught in Unit 3.7: Supply-side Policies
- Infrastructure
- The physical and organizational systems needed for economic activity, including transport, energy, water and communication networks.
- Long-Run Aggregate Supply
- The total output an economy can produce when its factors of production are fully employed at their sustainable productive capacity.Taught in Unit 3.2: Variations in Economic Activity: Aggregate Demand and Aggregate Supply
- Productivity
- The amount of output produced per unit of input, such as output per worker or per hour worked.Taught in Unit 3.7: Supply-side Policies
- Potential Output
- The level of output an economy can sustainably produce when its productive resources are fully employed.Taught in Unit 3.2: Variations in Economic Activity: Aggregate Demand and Aggregate Supply
- Economic Growth
- An increase in the real output of an economy over time, usually measured by an increase in real GDP.Taught in Unit 3.3: Macroeconomic Objectives
- Crowding In
- A situation in which government spending or investment encourages additional private-sector investment.
- Opportunity Cost
- The value of the next best alternative forgone when a choice is made.
References
Sources
- 01
UK Infrastructure: A 10 Year Strategy
HM Treasury and National Infrastructure and Service Transformation Authority
- 02
Decade long Infrastructure Strategy to deliver stability, investment and national renewal
HM Treasury and National Infrastructure and Service Transformation Authority
- 03
UK Infrastructure Pipeline
National Infrastructure and Service Transformation Authority
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