There are 1,625 active companies in the steam and air conditioning supply sector in the UK (SIC code 35300). This sector falls under Section D — Electricity, gas, steam and air conditioning supply — of the UK Standard Industrial Classification. The sector has a relatively low 8.2% dissolution rate — 1,625 of 1,961 registrations remain active. The sector is experiencing rapid growth, with 177.2% of active businesses incorporated since 2020 — indicating strong recent demand. 101% of companies were formed after 2010, marking this as a sector with predominantly recent entrants. The average company age in this sector is 8.5 years. London leads with 10% of companies in this sector. Companies in this sector hold 77 government contracts valued at £2.2B.
Source: Companies House register via UVAGATRON, October 2026
A rapidly growing sector with 177.2% of active companies formed since 2020.
The steam and air conditioning supply sector has a <Link href="/glossary/company-dissolution">8.2% dissolution rate</Link>. The average active company in this sector is 8.5 years old. Geographic concentration: 10% in LONDON.
Companies in the steam and air conditioning supply sector have been awarded 77 government contracts worth £2183.4M in total.
There are 1,625 active companies classified under SIC code 35300 (Steam and air conditioning supply) in the UK, out of 1,961 total registered.
SIC code 35300 stands for "Steam and air conditioning supply". It belongs to Section D — Electricity, gas, steam and air conditioning supply of the UK Standard Industrial Classification.
The largest concentrations are in LONDON (161), BRISTOL (27), GLASGOW (26).
The average active steam and air conditioning supply company in the UK is 8.5 years old, with the oldest registration dating back to 1947.
Our database contains 13,889 data signals across 11 categories for active steam and air conditioning supply companies. The largest category is Governance with 6,926 signals from 5 government sources.
5.9M companies, 50M+ signals from 53 government sources. Risk scores, director networks, entity analysis.