Steam generators, except for central heating
UK companies organised by the CorpSignals industry, segment, and subsegment taxonomy.
Company snapshot
What this shows: the size and current activity of this classification, plus recent formations, company age, revenue coverage, and trade participation.
All companies
79
Active companies
40
Formed in latest 12 months
8
Median active-company age
4.0 years
Revenue known
2
Importers
7
Exporters
6
Top values shown in the chart
| Category | Companies |
|---|---|
| All companies | 79 |
| Active companies | 40 |
| Formed in latest 12 months | 8 |
| Importers | 7 |
| Exporters | 6 |
Revenue coverage among active companies: 2 known, 38 unknown (5.0%).
Company formations
What this shows: monthly incorporations and dissolutions from 1 January 2024, including companies of every current status.
Latest ten months shown in the chart
| Month | Formed | Dissolved |
|---|---|---|
| 2025-11 | 0 | 2 |
| 2025-12 | 0 | 1 |
| 2026-01 | 0 | 2 |
| 2026-02 | 0 | 1 |
| 2026-03 | 1 | 1 |
| 2026-04 | 0 | 1 |
| 2026-05 | 2 | 1 |
| 2026-06 | 2 | 1 |
| 2026-07 | 1 | 0 |
| 2026-08 | 0 | 0 |
Window: 2024-01 to 2026-08.
Company status
What this shows: all current Companies House status values; blank and missing values are combined as Unknown.
Top values shown in the chart
| Status | Companies |
|---|---|
| Active | 40 |
| Dissolved | 38 |
| Liquidation | 1 |
Active companies by UK region
What this shows: active companies with a known ITL2 region. The UK map falls back to a bar chart if map data cannot be loaded.
Top values shown in the chart
| ITL2 region | Companies |
|---|---|
| Inner London - West | 5 |
| West Midlands | 4 |
| Derbyshire and Nottinghamshire | 3 |
| Greater Manchester | 3 |
| Outer London - West and North West | 3 |
| Devon | 2 |
| Inner London - East | 2 |
| Outer London - East and North East | 2 |
| Shropshire and Staffordshire | 2 |
| Cambridgeshire and Peterborough | 1 |
Geography coverage: 40 known, 0 unknown (100.0%).
Revenue ranges
What this shows: active companies grouped into the platform’s ordered estimated-revenue bands.
Top values shown in the chart
| Revenue range | Companies |
|---|---|
| 0-1m | 11 |
| 1m-15m | 7 |
| 54m+ | 3 |
Revenue-range coverage: 21 known, 19 unknown (52.5%).
Company size and employees
What this shows: active companies by published size category and by reported employee count.
Top values shown in the chart
| Company size | Companies |
|---|---|
| Micro | 10 |
| Small | 7 |
| Medium | 1 |
| Large | 3 |
| Dormant | 8 |
Company-size coverage: 29 known, 11 unknown (72.5%).
Top values shown in the chart
| Employees | Companies |
|---|---|
| 0 | 4 |
| 1–9 | 8 |
| 10–49 | 2 |
| 50–249 | 2 |
Employee coverage: 16 known, 24 unknown (40.0%).
Active-company age
What this shows: how long currently active companies have been incorporated.
Top values shown in the chart
| Age band | Companies |
|---|---|
| Under 1 year | 8 |
| 1–3 years | 6 |
| 3–5 years | 10 |
| 5–10 years | 7 |
| 10–20 years | 4 |
| 20+ years | 5 |
Incorporation-date coverage: 40 known, 0 unknown (100.0%).
Classification breakdown
What this shows: active companies across the next taxonomy level; direct assignments are labelled separately. The top 20 are shown and remaining values are combined as Other.
Top values shown in the chart
| Classification | Companies |
|---|---|
| 25300 | 40 |
International trade
What this shows: active-company participation in imports and exports, followed by the ten HS2 categories involving the most distinct companies.
Top values shown in the chart
| Trade participation | Companies |
|---|---|
| Importer only | 2 |
| Exporter only | 1 |
| Both | 5 |
| Neither | 32 |
Top imports HS2 categories
Top values shown in the chart
| HS2 category | Companies | GBP | Available dates |
|---|---|---|---|
| 85 — Electrical machinery and equipment | 7 | £6,072,081,961 | 2016-01-01 – 2026-05-01 |
| 73 — Iron or Steel Products | 4 | £794,056,102 | 2016-01-01 – 2026-05-01 |
| 84 — Machinery, boilers, and mechanical appliances; parts | 4 | £7,482,310,292 | 2016-01-01 – 2026-05-01 |
| 74 — Copper and copper products | 3 | £33,830,077 | 2017-05-01 – 2026-01-01 |
| 75 — Nickel and nickel products | 3 | £159,419,061 | 2016-01-01 – 2026-05-01 |
| 83 — Miscellaneous metal items | 3 | £102,040,581 | 2016-03-01 – 2026-05-01 |
| 90 — Optical and medical tools and devices | 3 | £1,528,214,143 | 2016-01-01 – 2026-05-01 |
| 38 — Miscellaneous chemical products | 2 | £53,623,685 | 2016-03-01 – 2026-03-01 |
| 39 — Plastics and plastic products | 2 | £476,793,173 | 2016-02-01 – 2026-05-01 |
| 40 — Rubber and rubber products | 2 | £85,863,928 | 2016-01-01 – 2026-05-01 |
Top exports HS2 categories
Top values shown in the chart
| HS2 category | Companies | GBP | Available dates |
|---|---|---|---|
| 84 — Machinery, boilers, and mechanical appliances; parts | 6 | £7,295,611,369 | 2016-01-01 – 2026-05-01 |
| 85 — Electrical machinery and equipment | 5 | £2,457,910,165 | 2016-01-01 – 2026-05-01 |
| 72 — Iron and Steel | 3 | £89,162,051 | 2016-06-01 – 2026-05-01 |
| 82 — Basic metal tools and utensils | 3 | £44,148,186 | 2016-01-01 – 2026-05-01 |
| 90 — Optical and medical tools and devices | 3 | £1,483,455,086 | 2016-01-01 – 2026-05-01 |
| 73 — Iron or Steel Products | 2 | £441,411,937 | 2016-01-01 – 2026-05-01 |
| 75 — Nickel and nickel products | 2 | £206,479,398 | 2016-01-01 – 2026-05-01 |
| 81 — Various base metals and cermets | 2 | £95,165,749 | 2016-01-01 – 2026-05-01 |
| 86 — Railway and tramway vehicles and parts | 2 | £20,961,750 | 2016-01-01 – 2026-05-01 |
| 87 — Vehicles, parts, and accessories (not for trains or trams) | 2 | £568,665,697 | 2016-02-01 – 2026-03-01 |
Business and digital traits
What this shows: active companies identified with selected ownership, business-model, and online-presence traits.
Values shown in the chart with data coverage
| Trait | Companies | Known | Unknown | Coverage |
|---|---|---|---|---|
| Family business | 3 | 29 | 11 | 72.5% |
| Holding company | 0 | 29 | 11 | 72.5% |
| Solo founder | 15 | 29 | 11 | 72.5% |
| Ecommerce | 1 | 4 | 36 | 10.0% |
| Website | 6 | 6 | 34 | 15.0% |
| 5 | 6 | 34 | 15.0% |
Leading active companies
What this shows: the ten active companies with the highest non-missing revenue, with company number used as the deterministic tie-breaker.
Top values shown in the chart
| Company | Revenue |
|---|---|
| Greens Power Limited | £14,074,887 |
| Unit Superheater Engineering Limited | £6,880,923 |
Revenue coverage: 2 known, 38 unknown (5.0%).
Related classifications
What this shows: sibling classifications ranked by distinct active companies, excluding the current node. The top 20 are shown and remaining values are combined as Other.
Top values shown in the chart
| Classification | Companies |
|---|---|
| Other products n.e.c. | 9,150 |
| Metal structures | 5,172 |
| Machined products | 3,054 |
| Metal doors & windows | 1,811 |
| Treated & coated products | 1,269 |
| Tools | 1,008 |
| Tubes, pipes, hollow profiles, fittings | 797 |
| Iron, steel, ferro-alloys | 794 |
| Forged, pressed, stamped products | 495 |
| Locks and hinges | 366 |
| Fasteners | 357 |
| Precious metals | 343 |
| Wire products, chain & spring | 339 |
| Chrome, manganese, nickel & their wire | 313 |
| Tanks & reservoirs | 276 |
| Central heating radiators and boilers | 231 |
| Aluminium products | 225 |
| Non-ferrous castings | 225 |
| Steel castings | 196 |
| Light metal castings | 167 |
| Other | 941 |
SIC classification
SIC 25300 — Manufacture of steam generators, except central heating hot water boilers
Includes
manufacture of steam or other vapour generators, manufacture of auxiliary plant for use with steam generators: condensers, economisers, superheaters, steam collectors and accumulators, manufacture of nuclear reactors, except isotope separators, manufacture of parts for marine or power boilers, pipe system construction comprising further processing of tubes generally to make pressure pipes or pipe systems together with the associated design and construction work
Excludes
manufacture of central heating hot-water boilers and radiators, see ##25.21, manufacture of boiler-turbine sets, see ##28.11, manufacture of isotope separators, see ##28.99