3,357 active companies are registered in Isleworth with Companies House. Out of 4,025 companies ever registered here, 298 are no longer active — a 83% survival rate. The area has seen significant recent growth, with 57.3% of active businesses incorporated since 2020. Over half (69%) of active companies were formed since 2020, making this one of the UK's fastest-growing business locations. The most common industry sector is buying and selling of own real estate, with 293 companies. Isleworth is home to 43 FCA-regulated firms and 22 registered charities. Companies here hold 15 government contracts worth £25.0M in total. The average company age is 7.1 years. The earliest company registration in Isleworth dates back to 1923.
Source: Companies House register via UVAGATRON, September 2026
Isleworth is a growth hotspot — over half of its active companies were formed since 2020.
The average active company in Isleworth is 7.1 years old. There are 43 <Link href="/glossary/fca-financial-conduct-authority">FCA-regulated firms</Link> in the area. 22 registered charities operate locally.
Companies in Isleworth have been awarded 15 government contracts with a combined value of £25.0M. See the Top Government Contractors report.
There are 3,357 active companies registered in Isleworth, out of 4,025 total. 298 (7%) are no longer active.
The top industries in Isleworth include Buying and selling of own real estate (293 companies), Other letting and operating of own or leased real estate (170 companies), Information technology consultancy activities (151 companies).
57.3% of currently active companies in Isleworth were incorporated since 2020, indicating strong recent growth.
Our database contains 20,740 data signals across 11 categories for active companies in Isleworth. The largest category is Governance with 10,093 signals from 6 sources.
The oldest company registration in Isleworth dates back to 1923, spanning over 103 years of business history.