ICAEW chart of the week: Spending Review 2025

My chart for ICAEW this week looks at the government’s priorities as expressed through departmental budgetary allocations over the next three years.

A bar chart showing the average annual real-term percentage increase in departmental spending over the three years to 2028/29.

Defence +3.8%. 
Security +3.7%. 
Business & Trade +3.0%. 
Health +2.7%. 
Local Government. +2.6% (central funding +1.1%, balance from local taxation). 
Justice +2.0%. 
Overall average increase +1.5%. 
Science +0.9%. 
Education +0.8%. 
Devolved administrations +0.7%. 
Energy & New Zero +0.7%. 
Home Office +0.5%. 
Cabinet Office +0.4%. 
DWP -0.2%. 
Transport -0.5%. 
Culture, Media & Sport -1.4%. 
HMRC -1.5%. 
Hm Treasury -1.9%. 
Agriculture & Rural Affairs -2.3%. 
Foreign & Development -8.3%. 
Asylum -13.1%. 

13 Jun 2025. Chart by Martin Wheatcroft. Design by Sunday. Source: HM Treasury, 'Spending Review 2025'.

The Spending Review 2025 establishes base operating budgets for government departments for the three financial years from 1 April 2026 (2026/27, 2027/28 and 2028/29) and base capital budgets for four financial years (extending to 2029/30).

Departmental budgets for the current financial year ending on 31 March 2026 (2025/26), total £648bn and are expected to rise to £678bn in 2026/27, £697bn in 2027/28, and £717bn in 2028/29, an increase of 10.6% over the three years or 3.4% a year. This is equivalent to an average increase of 1.5% a year in real terms after adjusting for inflation of 1.9% a year on average over the spending review period.

The totals can be analysed between operating or ‘day-to-day’ budgets of £517bn, £536bn, £552bn and £568bn in 2025/26, 2026/27, 2027/28 and 2028/29 respectively and capital budgets of £131bn, £143bn, £145bn and £149bn. These are real terms increases of 1.2% and 2.4% a year on average over three years. 

The capital budget in 2029/30 is £152bn, a cut in real terms that reduces the average annual increase in capital budgets over four years to 1.8% a year on average.

My chart this week highlights how the 1.5% average annual real increase over three years in total budgets (operating and capital) has been allocated across departments, starting with the Ministry of Defence, which leads the pack with an average increase in its budget of 3.8% a year, followed closely by the security services, with an average annual increase of 3.7%. This reflects the elevation of national defence and security to the top of the government’s priorities since the general election last year, even though this increase will only move defence and security spending from 2.3% of GDP currently to 2.6% of GDP by 2027, a long way off the proposed 3.5% of GDP new minimum to be discussed at the NATO summit.

Economic growth and the NHS are the next highest priorities for the government and so it is perhaps unsurprising that the Department of Business & Trade does well with an annual average increase of 3.0%, closely followed by the Department of Health & Social Care, which receives 2.7%. The latter is the biggest increase in cash terms, at £31bn in total or about £12bn more in 2028/29 after adjusting for inflation.

Local government finances are in a parlous state and so the government has pencilled in a 2.6% average annual increase in core budgets for local authorities in England over the next three years. However, it is only increasing central funding by 1.1% a year on average, implying the balance will need to be made by local taxation, principally council tax.

The Ministry of Justice has been awarded 2.0% a year on average as the government seeks to tackle significant backlogs in the courts, overcrowded prisons and significantly under-resourced probation services.

The Department of Science, Innovation and Technology has received a below average annual increase of 0.9% over the next three years, but this follows an almost 12% increase over the past two years as the government has sought to increase investment in research and development to boost economic growth.

Despite being a key priority for the government, the Department for Education has only received a 0.8% average annual increase, partly because of falling primary school rolls in line with a significant fall in the birth rate over the last decade.

The devolved administrations – Scotland (0.8%), Wales (0.7%) and Northern Ireland (0.5%) – are budgeted to receive an average of 0.7% a year over three years as a consequence of the Barnett formula that links UK national government spending in England to the block grants provided to each devolved administration, adjusted for relative changes in population among other factors.

The Cabinet Office is expected to receive just 0.4% on average reflecting the contribution that planned efficiency savings are expected to contribute to administrative budgets. This is also the reason for the 0.2% a year real-terms fall in the Department for Work and Pensions (DWP) budget as automation helps reduce the cost of administering the welfare system.

The budget of the Department for Transport is expected to fall by 0.5% a year overall, but this partly reflects a fall in spending on High Speed 2 as it comes closer to completion. If that is excluded, the department’s budget is expected to increase by 0.5% a year on average. The actual increase in spending should be even higher, as the budget is net of passenger revenues that are expected to grow at a faster rate over the next three years.

Extra money for housing was found within the spending review, but this wasn’t enough to stop the budget for the Department of Housing, Communities and Local Government from shrinking by an annual average of 0.6% a year as other activities are cut back, while the Department for Culture, Media & Sport (-1.4% a year on average) has also been asked to cut back its activities.

HMRC (-1.5% a year) and HM Treasury (-1.9% a year) see their budgets reduced significantly, with digitisation and efficiency savings expected to contribute significant sums.

The Department for Farming, Agriculture, and Rural Affairs (-2.3%) is also expected to see significant cuts over the next three years, as is the Foreign, Commonwealth and Development Office (-8.3%), although in the latter case that is principally driven by the decision to reduce overseas development assistance from 0.5% of GDP to 0.3% of GDP although some will come from back office savings.

Not shown in the chart are small and independent bodies and the government legal function, which are together expected to increase by 0.4% a year on average, although this comprise a -0.5% annual reduction in the former and a 5.3% average annual increase in the latter. The net changes after inflation are a fall of less than £0.1bn and an increase of just over £0.1bn respectively, which are rounding errors in the hundreds and hundreds of billions of pounds spent by government departments each year. 

ICAEW chart of the week: Greenhouse gas emissions

My chart this week looks at how greenhouse gas emissions increased again in 2022 after a big dip during the pandemic. Was that just a blip or will the downward trend resume?

Greenhouse gas emissions

Line chart showing million tonnes of CO2-equivalent emissions between 1990 and 2022.

The line starts at 843m tCO2e in 1990, rises to 853m tCO2e in 1991 and then gradually falls with a few upward blips until reaching 489m tCO2e in 2020 and then rising to 513m tCO2e in 2022.

12 Oct 2023.
Chart by Martin Wheatcroft. Design by Sunday.
Source: ONS, 'Greenhouse gas emissions: provisional estimates 2022'.

The Office for National Statistics (ONS) recently reported provisional numbers for greenhouse gas emissions in 2022, reporting that UK residents and UK-resident businesses emitted a total of 513m tonnes of carbon dioxide equivalents (tCO2e).

Our chart this week shows the overall trend since 1990 according to the ONS. Emissions were 843m tCO2e in 1990, rising to 853m tCO2e in 1991, from which point they have declined in most years since then apart from the odd upward blip.

The 513m tCO2e provisionally estimated to have been emitted in 2022 is up 2% over 2021 and just under 5% higher than the 489m tCO2e emitted during 2020, the first year of the pandemic when much of the country was locked down.

The good news is that this is still 7% lower than the 551m tCO2e emitted during 2019.

This disruption to the downward trend is primarily due to the pandemic, which saw emissions drop by a massive 11% in 2020 compared with 2019, before rising by 3% in 2021 and 2% in 2022.

The hope is that the downward trend will resume in 2023 and 2024 as decarbonisation efforts continue.

Most of the fall in emissions since 1991 has been delivered by the shift from coal to gas and renewable sources in electricity generation, combined with greater energy efficiency in appliances and equipment – what many commentators call “the easy bit”. The next stages of decarbonisation will be much harder as it involves switching everyone from fossil-fuel-powered vehicles to electric, completing the shift to renewable electricity generation, decarbonising most industrial processes and radically changing how we heat our homes and offices.

This chart was originally published by ICAEW.

ICAEW chart of the week: the path to net zero

All eyes have been on COP26 as the world’s leaders seek to set a course to eliminating carbon emissions over the next quarter of a century or so. Our chart highlights what it will take for the UK to do its part of delivering net zero by 2050.

Chart showing how the UK plans to go from 520m tonnes CO2-equivalent of greenhouse gas emissions in 2019 to net zero in 2020:

146m power & heat in 2019 -57m power -86m heat = 3m in 2050

167m transport in 2019 -117m domestic transport -24m international travel = 26m in 2050

207m industry, agriculture & waste in 2019 -86m industry -42m agriculture -27m waste = 52m in 2050

less: 81m greenhouse gas removals in 2050

to get to net zero

The Breakthrough Agenda agreed at COP26 by countries representing more than 70% of the world economy will be key, by making clean technologies the most affordable, accessible and attractive choice for all globally in each of the most polluting sectors. This involves ensuring that clean power, zero emission vehicles, near-zero emission steel, green hydrogen and climate-resilient sustainable agriculture are in place by 2030 so that countries including the UK can deliver on their ambitious plans to eliminate greenhouse emissions from their economies.

For the UK, the plan is to reduce greenhouse gas emissions from the 520m tonnes CO2-equivalent (tCO2e) emitted in 2019 to between 75m and 81m in 2050, with a combination of natural and technological solutions to remove an equivalent amount of carbon from the atmosphere to bring net emissions down to zero. This is based on the scenarios set out in the UK’s Net Zero Strategy published on 19 October 2021, which starts from 146m tCO2e of emissions from power and heat, 167m tCO2e from transport and 207 tCO2e from industry, agriculture & waste.

The different steps that will be needed to achieve this goal start with decarbonising power generation and heating, going from 146m to 3m tCO2e in 2050. The UK has already made substantial progress in installing renewable generation and appears on track to achieve the 57 MtCO2e further reduction to almost entirely remove fossil fuels from electricity. Challenging as that will be, it will be even more difficult to replace natural gas as the principal source of heating for the majority of buildings across the UK in order to find a further 86m tCO2e of reduction.

Eliminating 117m out of 122m tCO2e of emissions from domestic transport will mainly be accomplished by replacing petrol and diesel vehicles with electric, not only requiring affordable car technology but an entire new infrastructure of charging points. There is less optimism for international travel, where the ambition is to take out 24m of the 45m tCO2e emitted in 2019 in the ‘high innovation’ scenario presented in the chart and only 10m tCO2e in the other two scenarios (which assume greater reductions in other areas to arrive at a similar end point).

Industry, agriculture, and waste have even more to do, with businesses including steel producers, manufacturers and the fuel supply chain needing to decarbonise to remove 86m tCO2e out of 104m tCO2e. Agriculture and land use will need to take out 42m of 63m tCO2e of emissions, while emissions from waste and fluorinated greenhouse gases (F-gases) will need to come down by 27m from 40m to 13m tCO2e.

The result will be a UK economy still emitting 81m tCO2e a year, comprising 3m from power and heat, 26m from transport and 52m from industry, agriculture, and waste. Net zero will be achieved by removing an equivalent amount of carbon from the atmosphere, partially through natural means but in practice through technological solutions that have yet to be developed.

There is a lot that all of us need to do to achieve net zero here in the UK. The positive news emerging from COP26 is that the rest of the world is also committed to doing so too – a global solution for a global climate emergency.

Read more – ICAEW Insights Special on COP26: acting together on climate.

This chart was originally published by ICAEW.