3,310 active companies are registered in Isleworth with Companies House. Out of 4,054 companies ever registered here, 447 are no longer active — a 82% survival rate. The area has seen significant recent growth, with 57.5% of active businesses incorporated since 2020. Over half (71%) 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 285 companies. Isleworth is home to 41 FCA-regulated firms and 23 registered charities. Companies here hold 15 government contracts worth £25.0M in total. The average company age is 7.2 years. The earliest company registration in Isleworth dates back to 1923.
Source: Companies House register via UVAGATRON, October 2026
Isleworth is a growth hotspot — over half of its active companies were formed since 2020.
The average active company in Isleworth is 7.2 years old. There are 41 <Link href="/glossary/fca-financial-conduct-authority">FCA-regulated firms</Link> in the area. 23 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There are 3,310 active companies registered in Isleworth, out of 4,054 total. 447 (11%) are no longer active.
The top industries in Isleworth include Buying and selling of own real estate (285 companies), Other letting and operating of own or leased real estate (166 companies), Information technology consultancy activities (148 companies).
57.5% of currently active companies in Isleworth were incorporated since 2020, indicating strong recent growth.
Our database contains 27,746 data signals across 11 categories for active companies in Isleworth. The largest category is Governance with 13,700 signals from 6 sources.
The oldest company registration in Isleworth dates back to 1923, spanning over 103 years of business history.