Almost 60p in every £1 of service spending goes on two things: children's services and adult social care. Everything else the council does — bins, streets, roads, parks, libraries, leisure, housing, climate — shares the remaining 40p.
The working balance has been remarkably flat — around £20–22m for nine years. What has moved is the floor beneath it: the minimum the Director of Finance will allow has been raised twice, from £8m to £10m and now to £12m for 31 March 2027. The balance is not falling; the assessed risk against it is rising.
The headline 17.3% is flattered by one company. Ensign Highways is Portsmouth-registered and holds the highways PFI — £25.3m of the £71.8m local total. Strip that single contract, locked until 2032, and local share falls to roughly 11%. The real finding is construction: £147.1m a year, the largest category by far, with only 10.3% going to Portsmouth-registered firms on work physically done in the city. That is about £132m a year leaving Portsmouth on buildings inside it.
Portsmouth City Council — Budget & Council Tax 2026/27 and Medium-Term Budget Forecast, Full Council · Portsmouth City Council — Statement of Accounts 2024/25 (audited)