Download the list of Construction companies in London. Smartscrapers provides an accurate directory and the latest data on the number of Construction companies in London There are 7490 Construction companies in London as of May 5, 2025; which is an 6.98% increase from 2023. Of these locations, 7025 Construction companies which is 93.79% of all Construction companies in London are single-owner operations, while the remaining 465 which is 6.21% are part of larger brands. Average age of Construction companies in London is 3 years and 6 months.