In most markets we map, scale buys margin. Plant hire inverts it. Sunbelt Rentals — the former A-Plant, the UK arm of the US-listed Sunbelt group and the biggest general fleet in the category — put £680.2M through 4,332 people last year for £13.9M of pre-tax profit, a 2.0% margin, on revenue that slipped 2%. Meanwhile M.G.F., a Wigan trench-shoring specialist a tenth of the size, made £19.3M on £65.9M — 29.3% — more absolute profit than Sunbelt, while growing 19%. That gap is the whole report: across the 117 UK plant-hire companies that publish a full profit-and-loss, booking roughly £5.1bn of combined turnover (nearer £4.5bn once group layers filing twice are deduplicated — see Methodology), the ubiquitous general fleets grind at low single digits and the engineered niches — trench shoring, formwork, tower cranes, contract lifting — earn 12–29%. Everyone pays roughly the same for the iron; the margin lives in what you know how to do with it. Figures are approximate — verify against a company’s own accounts before relying on any single number.
Read the fleet economics first
Four things change how you read every number below.
Depreciation is the biggest line on every P&L here. A hire business buys machines and rents them out; the pre-tax margins in this report are struck after depreciating those fleets — the industry’s dominant cost. That is why a 6.6% median margin coexists with businesses that are strongly cash-generative day to day, why single digits is normal at the generalist end, and why a sustained 20%+ pre-tax margin on a hire fleet is genuinely exceptional rather than merely good.
The £16bn company isn’t. Our extracted figure for Chippindale Plant — £16.1bn of turnover through 118 staff — is a thousand-fold too large: the company’s filed accounts show £16.1M, and over an 8-month period after a year-end change. The error is ours, not the filer’s. Rather than mix a short period into the totals, we exclude it from every table, chart and total below.
One of the giants hires drilling rigs, not diggers. Seadrill UK (£279.8M, converted from its US-dollar accounts, +167%) is the UK entity of the offshore drilling group — deepwater rigs on day-rates, sitting in the same rental classification as the excavator fleets. It is excluded from every competitive read.
The household names you expect are mostly elsewhere. Speedy Hire (£416.6M), HSS ProService (£333.2M, a 15-month figure), the powered-access giant Nationwide Platforms and generator group Aggreko are classified under a neighbouring equipment-rental heading and sit outside this map — so the real UK hire industry is meaningfully bigger than the £5bn shown here. And several entries that are here exist to serve their own construction parents — Murphy Plant, Vinci Fleet Services, M Group (Plant & Fleet Solutions), Keltbray Plant — captive arms whose intercompany pricing makes their margins structural, not competitive. They stay in the totals but out of the margin comparisons.
The giants: big fleets, thin air
| Company | What it is | Turnover | PBT | Margin | TO YoY |
|---|---|---|---|---|---|
| Sunbelt Rentals | national general fleet (ex A-Plant, US-owned) | £680.2M | £13.9M | 2.0% | −2% |
| Vp | listed specialist-rental group (Groundforce, Torrent Trackside…) | £380.0M | £21.7M | 5.7% | +3% |
| GAP Group | family-owned national fleet (Glasgow) | £326.7M | £40.2M | 12.3% | +8% |
| Hire Station | tool hire — Vp’s tool division | £181.7M | £2.2M | 1.2% | +1% |
| M Group (Plant & Fleet Solutions) | captive plant arm of an infrastructure-services group | £151.0M | £3.5M | 2.3% | +14% |
| Generation (UK) | site equipment and non-mechanical plant | £138.4M | £11.1M | 8.0% | +0% |
| The Hire Service Company Trading | HSS’s legacy tool-hire opco (15-month period)† | £132.1M | −£66.6M | — | — |
| John Nixon | plant, welfare and site accommodation (Newcastle) | £108.3M | £3.5M | 3.2% | +9% |
| Murphy Plant | captive plant arm of the Murphy construction group | £105.0M | £13.9M | 13.2% | +13% |
| Charles Wilson Engineers | London and home-counties plant hirer (CW Plant) | £81.9M | £13.8M | 16.9%‡ | +4% |
Group layers: GAP Group’s second filing entity (£325.9M) sits inside the GAP holding company’s row, Hire Station’s £181.7M is consolidated within Vp’s £380.0M, and the Wessex Eagle pair further down the register file the same £39.8M twice — the £5.1bn headline still counts those layers, so the deduplicated market is nearer £4.5bn. Murphy Plant and M Group hire chiefly to their own groups; their margins are intercompany arithmetic.
† The Hire Service Company Trading is the legacy HSS operating company — HSS Hire Service Group until 2024 — and its figures cover a 15-month period during which its customers were migrated to sister company HSS ProService; the loss carries £49.2M of impairment and restructuring charges. ‡ Charles Wilson’s 16.9% is not a hire margin: £13.7M of its £13.8M pre-tax profit is gains on selling its used fleet (£21.5M of £22.1M the year before) — a buy-new, sell-used fleet-churn model — and it pays £3.6M of rent and £3.2M of management fees to its Gallagher-group parents.
The top of the table is the thesis. Sunbelt’s 2.0% and Hire Station’s 1.2% are what ubiquitous kit earns when every competitor owns the same diggers and dumpers and the customer’s procurement team knows it. The genuine exception is GAP Group — still family-owned, revenue still growing (+8%) — holding a 12.3% margin at national scale, roughly six times Sunbelt’s on half the revenue; the caveat is that around £13M of its £40.2M profit is gains on selling used fleet — routine for a hire business, but a third of the headline — and pre-tax profit actually dipped from £43.9M even as revenue grew. Vp sits in between precisely because it is a collection of specialist businesses with one generalist inside it: the group made 5.7%, but its tool-hire division was the 1.2% — about 1% statutory, nearer 4% before £4.9M of impairments and restructuring. And the biggest loss in the category — −£66.6M at The Hire Service Company Trading, with 1,040 staff and £469k of net assets remaining — is the legacy HSS operating entity mid-way through the group’s pivot to HSS ProService: a 15-month period in which its customers were moved to the sister company and £49.2M of impairments and restructuring charges landed here. That loss is a corporate-restructuring artifact, not a read on day rates. General tool hire is still the most crowded corner of the market, and it produced the thinnest margins in the table.
Where the money is: the engineered niches
Filter to genuine independent operators between £5M and £100M, profitable at a 6%+ pre-tax margin (a deliberately lower bar than we use in asset-light industries — see the depreciation point above), and the pattern is unmissable: almost every name is a specialist.
| Company | What it does | Turnover | PBT | Margin |
|---|---|---|---|---|
| Charles Wilson Engineers | general plant, London and home counties | £81.9M | £13.8M | 16.9%‡ |
| Summit Platforms | powered access | £75.1M | £6.1M | 8.1% |
| M.G.F. (Trench Construction Systems) | trench shoring and excavation support | £65.9M | £19.3M | 29.3% |
| London Tower Crane Hire & Sales | tower cranes | £57.7M | £7.1M | 12.4% |
| Mabey Hire | temporary works — props, shoring, bridging | £56.0M | £4.1M | 7.3% |
| RMD Kwikform | formwork and falsework | £47.2M | £8.1M | 17.1% |
| Doka UK | formwork (Austrian group) | £42.1M | £7.3M | 17.4% |
| M. O’Brien (Plant Hire) | operated plant hire | £40.8M | £7.4M | 18.2% |
| G.G.R. Group | lifting — mini cranes and vacuum handling | £35.6M | £6.3M | 17.8% |
| Thames Materials Holdings | plant, haulage and aggregates, west London | £30.0M | £7.8M | 26.1% |
‡ Charles Wilson is the odd one out twice over: it is a general hirer, and its 16.9% is dominated by gains on selling its used fleet (£13.7M of the £13.8M) rather than day-rate margin — see the note under the giants table. It stays in the table for completeness but out of the specialist-margin read.
Nine more clear the bar between £5M and £40M — among them Welfare Hire Nationwide (mobile welfare units, 15.4%), Fairfax Plant Hire (16.4%), K Holdings (NI) (21.3%) and G T Lifting Solutions (telehandlers, 9.3%, growing 27% while hiring). Two entries we leave out of the competitive read: Clancy Plant, which serves its own utilities-contracting group, and Kamm (Holdings), whose £64.5M through 63 staff looks like equipment sales rather than fleet-hire economics.
The common thread in the high-margin names is engineering content, not iron. Trench boxes, falsework and tower cranes come with design, certification and consequence-of-failure attached — the customer is buying an engineered solution with kit inside it, and pricing follows the risk being taken off their hands. A digger is a digger from anyone; a groundworks temporary-works design is not.
Growth, read with care
The demand backdrop matters here: the HS2 civils peak — the biggest single tide that floated the national fleets through the early 2020s — is receding, and you can see it at the top of the market. Sunbelt shrank 2%, Generation (UK) was flat with profit down by more than half, Hire Station crawled at +1%, and Vp’s +3% follows a year of heavy write-downs. The growth that remains is specialist and staff-backed:
| Company | Turnover | PBT | Margin | TO YoY | Staff YoY |
|---|---|---|---|---|---|
| ODG Plant Hire | £26.6M | £729k | 2.7% | +76% | +0% |
| Essential Access Platforms | £16.3M | £1.7M | 10.3% | +47% | +34% |
| Liebherr-Rental | £16.9M | £151k | 0.9% | +40% | +8% |
| Readypower Rail Services | £68.4M | £4.1M | 6.0% | +38% | +26% |
| Map Plant | £14.4M | £1.2M | 8.0% | +29% | +0% |
| G T Lifting Solutions | £23.7M | £2.2M | 9.3% | +27% | +26% |
| Wernick Power Solutions | £20.0M | £3.3M | 16.7% | +25% | −13% |
| M.G.F. (Trench Construction Systems) | £65.9M | £19.3M | 29.3% | +19% | +5% |
The staff column is the honesty test. Readypower Rail Services (+38% revenue, +26% headcount) is riding the rail-renewals spend that continues regardless of HS2; Essential Access Platforms and G T Lifting are growing profitably while hiring — the genuine article. Revenue growth without hiring (ODG at +76% on a 2.7% margin) is more often kit bought ahead of demand or work taken at thin rates; a manufacturer’s own rental arm (Liebherr-Rental, 0.9%) exists partly to place machines, so its margin is not a market read. Wernick Power Solutions grew 25% while cutting staff 13% — a generator fleet sweating utilisation, and the one to watch for whether the margin holds.
Market structure: concentrated at the top, family-owned underneath
With the two excluded entries out, the remaining 115 companies book £5.05bn, and concentration is moderate: the top 5 hold 37.5%, the top 10 hold 50.0%, the top 20 hold 63.5% and the top 50 hold 86.4% — and even those figures overstate it slightly, since the top ten still contains two GAP filing layers and Vp’s consolidated tool division. Revenue is concentrated; profit is not. The £40M-odd of pre-tax profit at GAP alone rivals the combined profit of the three biggest general fleets around it.
This is an old, patient industry: 36 of the 115 pre-date 1990 (Sunbelt’s entity dates to 1947, Vp’s to 1950), and only 13 have been incorporated since 2016 — a fleet costs real money before the first invoice, so the start-up tail that crowds most of our maps barely exists here. Ownership is strikingly personal: 79 of 115 are individually or family owned against 34 corporate-owned — this remains one of the most family-held industries we’ve mapped — but 28 carry Holdings/Group/Bidco-style names, the structural fingerprint of buyouts done or exits planned. Patient family capital built these fleets; private equity is working out which ones to buy.
For the demand side of this story, see our maps of the building contractors and civil engineering firms these fleets serve.
What the map shows
- Scale inverts margin. The biggest general fleet (Sunbelt, £680.2M) cleared 2.0%; a trench-shoring specialist a tenth its size (M.G.F., £65.9M) cleared 29.3% and made more absolute profit.
- General tool hire is the hardest corner — Hire Station at about 1% statutory (nearer 4% before impairments and restructuring), and the category’s biggest loss sitting in HSS’s legacy operating company, a restructuring artifact rather than a trading result: the most crowded, least differentiated kit earns the least.
- GAP is the exception that proves the rule — a family-owned national fleet holding 12.3% while growing 8%, six times Sunbelt’s margin on half the revenue.
- The premium is engineering, not iron. Trench shoring, formwork, tower cranes and contract lifting run at 12–29% because the customer buys certified risk-transfer, not a machine.
- The infrastructure tide is going out at the top. The national fleets are flat-to-down as the HS2 civils peak passes; the staff-backed growth is in rail renewals and powered access (Readypower +38%, Essential Access +47%).
- It’s still a family industry — for now. 79 of 115 companies are individually owned, but a quarter carry the holdco naming that signals buyouts done or planned.
Methodology and caveats
This covers only the UK construction-plant and equipment hirers that publish a full profit-and-loss — 117 of a register of around 427, so small local hirers filing abridged accounts are invisible here. Two entries are excluded from every table, chart and total: Chippindale Plant, where our extracted turnover is a thousand-fold too large — its filed accounts show £16.1M, over an 8-month period after a year-end change; the error is in our extraction, not the filing — and Seadrill UK, an offshore-drilling entity classified alongside the plant hirers whose figure is converted from US-dollar accounts. Household hire names — Speedy Hire, HSS ProService, Nationwide Platforms, Aggreko — sit under a neighbouring rental classification and are outside this map, so the true industry is larger than the £5.05bn shown. The HSS group straddles that boundary: its legacy operating company (The Hire Service Company Trading) is inside this classification while HSS ProService, which received its migrated customers, sits outside it — so the group’s revenue is split across the boundary rather than counted once. A few filers report extended periods rather than a year — The Hire Service Company Trading’s and HSS ProService’s latest accounts each cover 15 months — or file in a foreign currency; extended periods are tagged where they appear in tables, and non-GBP accounts are converted at prevailing rates. Where a group files through several entities (the two GAP layers, Vp and its Hire Station division, the Wessex Eagle pair) the totals still count each filer, so the deduplicated market is nearer £4.5bn. Captive plant arms serving their own construction parents (Murphy Plant, Vinci Fleet Services, M Group Plant & Fleet Solutions, Keltbray Plant, Clancy Plant) are excluded from margin comparisons because intercompany pricing sets their profitability; manufacturer rental arms are flagged where they appear. All margins are pre-tax and struck after fleet depreciation, the industry’s largest cost, and are not comparable with asset-light industries; each row uses the latest accounts available when the data was assembled, mostly year-ends between mid-2024 and mid-2025. Figures are approximate — this is analysis, not financial advice; verify any specific figure against a company’s own accounts.