Manufacture of steam generators, except central heating hot water boilers Companies in the UK

SIC 25300Manufacturing|466.7% formed since 2020|Data updated 19 Oct 2026
28
Active

28 active UK companies are classified under manufacture of steam generators, except central heating hot water boilers (SIC code 25300), a specialised sector. This sector falls under Section C — Manufacturing — of the UK Standard Industrial Classification. The sector has a relatively low 24.4% dissolution rate — 28 of 41 registrations remain active. The sector is experiencing rapid growth, with 466.7% of active businesses incorporated since 2020 — indicating strong recent demand. 121% of companies were formed after 2010, marking this as a sector with predominantly recent entrants. The average company age in this sector is 11.8 years. London leads with 25% of companies in this sector.

Source: Companies House register via UVAGATRON, October 2026

28
Active Companies
C
SIC Section
1959
Oldest Company
466.7%
Growth (2020s)
11.8 yr
Avg Company Age

A rapidly growing sector with 466.7% of active companies formed since 2020.

Incorporation by Decade
10%
15%
68%
Pre-1990: 3
2000s: 4
2010s: 6
2020s: 28

Data Signals

innovation
5132 src
Financial
1867 src
Governance
1054 src
Compliance
6710 src
Trade
362 src
Risk
195 src
ESG
192 src
growth
52 src
corporate_structure
51 src
operational
11 src

Sector Overview

The manufacture of steam generators, except central heating hot water boilers sector has a <Link href="/glossary/company-dissolution">24.4% dissolution rate</Link>. The average active company in this sector is 11.8 years old. Geographic concentration: 25% in LONDON.

24.4%
Dissolution rate
11.8 yrs
Avg company age

Company Size Breakdown

Small: 2 (40%)Medium: 1 (20%)Large: 2 (40%)

Government Activity

Companies in the manufacture of steam generators, except central heating hot water boilers sector have been awarded 4 government contracts worth £31.1M in total.

Frequently Asked Questions

How many manufacture of steam generators, except central heating hot water boilers companies are there in the UK?

There are 28 active companies classified under SIC code 25300 (Manufacture of steam generators, except central heating hot water boilers) in the UK, out of 41 total registered.

What is SIC code 25300?

SIC code 25300 stands for "Manufacture of steam generators, except central heating hot water boilers". It belongs to Section C — Manufacturing of the UK Standard Industrial Classification.

Where are most manufacture of steam generators, except central heating hot water boilers companies located?

The largest concentrations are in LONDON (7).

What is the average age of manufacture of steam generators, except central heating hot water boilers companies?

The average active manufacture of steam generators, except central heating hot water boilers company in the UK is 11.8 years old, with the oldest registration dating back to 1959.

What government data is available for manufacture of steam generators, except central heating hot water boilers companies?

Our database contains 956 data signals across 10 categories for active manufacture of steam generators, except central heating hot water boilers companies. The largest category is innovation with 513 signals from 2 government sources.

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Data is updated daily from official UK government sources including Companies House. Information is provided for reference only.