4,243 active companies are registered in Middlesex with Companies House. Out of 4,964 companies ever registered here, 293 are no longer active — a 85% survival rate. The most common industry sector is other letting and operating of own or leased real estate, with 297 companies. The area hosts 150 large enterprises, 42 small firms. Middlesex is home to 109 FCA-regulated firms and 91 registered charities. Companies here hold 123 government contracts worth £2.1B in total. The average company age is 22.5 years, suggesting a mature business environment. The earliest company registration in Middlesex dates back to 1895.
Source: Companies House register via UVAGATRON, October 2026
An established business centre with companies averaging 22.5 years of operation.
The average active company in Middlesex is 22.5 years old. There are 109 <Link href="/glossary/fca-financial-conduct-authority">FCA-regulated firms</Link> in the area. 91 registered charities operate locally.
Companies in Middlesex have been awarded 123 government contracts with a combined value of £2093.9M. See the Top Government Contractors report.
There are 4,243 active companies registered in Middlesex, out of 4,964 total. 293 (6%) are no longer active.
The top industries in Middlesex include Other letting and operating of own or leased real estate (297 companies), Buying and selling of own real estate (246 companies), Other business support service activities n.e.c. (186 companies).
15.5% of currently active companies in Middlesex were incorporated since 2020, indicating steady recent growth.
Our database contains 47,248 data signals across 12 categories for active companies in Middlesex. The largest category is Governance with 19,373 signals from 5 sources.
The oldest company registration in Middlesex dates back to 1895, spanning over 131 years of business history.