Asylum support cost £4.0bn last year — and fell. Britain's ageing population is projected to cost hundreds of billions more.
Asylum support cost £4.0bn in 2024/25 — and fell from £4.7bn the year before. Total welfare and pension spending is £322.6bn a year, and Britain's ageing population is projected to add hundreds of billions more by 2040. No official model links asylum spending to that long-term pressure.
The claim
Immigration (or asylum specifically) is the main driver of Britain's welfare bill and long-term fiscal pressure.
What is true
Asylum support has measurable, real costs: £4.0bn in 2024/25, of which £2.1bn was hotel accommodation — a genuine, large bill, not a trivial one, even though it fell from £4.7bn the year before as hotel use declined.
Put it in scale
£4.0bn
Observed: asylum support spend (annual, 2024/25)
£2.1bn of the £4.0bn total was spent on hotels (down from £3.0bn in 2023/24, as contracted hotels fell by 71 across the year and dispersal accommodation use grew) — down from £4.7bn total asylum support spend in 2023/24.
£322.6bn
Observed: total welfare/pension spend (annual, 2025/26)
Of which pensioner benefits alone are £177.7bn — dwarfing the asylum figure on the same annual, observed basis.
~20% of GDP
Modelled: long-term ageing-related pressure (by 2040)
A long-term MODELLED projection, not an observed annual spend figure — never place this on the same scale as the £4.0bn or £322.6bn ANNUAL figures above without saying so, which this card does explicitly.
What we know / don’t know
Does the OBR (or any official body) publish a fiscal model isolating migration's effect on the long-term ageing-related spending projection?
No. The OBR's current Fiscal Sustainability Report (July 2025) contains no migration-specific fiscal modelling or scenario analysis — it briefly mentions "the effects of working-age immigration" on dependency ratios without separately quantifying it. This card therefore does NOT claim migration causes, offsets, or is modelled against the ageing-related projection above — the two are shown on the same scale for magnitude only, not linked causally.
The verdict
Asylum support costs billions. Britain's ageing population is projected to cost far more — but no official model links the two.
Every number on this card
| Figure | What it counts | Geography · period | Status | Source |
|---|---|---|---|---|
| £4.0bn | Asylum support spending (accommodation, hotels, subsistence)£2.1bn of the £4.0bn total was spent on hotels (down from £3.0bn in 2023/24, as contracted hotels fell by 71 across the year and dispersal accommodation use grew) — down from £4.7bn total asylum support spend in 2023/24. | United Kingdom · 2024/25 | KNOWN | Home Office, Annual Report and Accounts 2024-25 |
| £322.6bn | Total social security spending (pensioner + working-age + children)Of which pensioner benefits alone are £177.7bn — dwarfing the asylum figure on the same annual, observed basis. | Great Britain · 2025/26 | KNOWN | DWP, Benefit expenditure and caseload tables |
| ~20% of GDP | OBR-projected age-related spending by 2040A long-term MODELLED projection, not an observed annual spend figure — never place this on the same scale as the £4.0bn or £322.6bn ANNUAL figures above without saying so, which this card does explicitly. | United Kingdom · Projected, by 2040 | MODELLED | OBR, Fiscal risks and sustainability (July 2025) |
- The £4.0bn asylum figure and the ~20%-of-GDP-by-2040 projection are NOT on the same basis: one is an observed annual spend, the other a modelled long-term share of a growing economy — never subtract or net one against the other.
- Asylum seekers are not the same population driving the ageing-related projection, which is about the existing resident population living longer — this card does not imply they are the same demographic story.
Verified against primary sources: 2026-08-31.