Foreign direct investment [FDI] into the United Kingdom (UK) has grown considerably in recent years. US, French, German and Japanese companies have generally accounted for the largest share of this FDI. In addition to greenfield and expansion investment, a major vehicle for inward FDI has been the acquisition of UK companies. The project examined whether nationally distinct approaches to management were introduced, following acquisition, among a sample of 201 UK subsidiaries of French, German, Japanese, US and UK companies. It provided data on the extent of changes and the post-acquisition influence of the new parent, comparing changes between the four foreign nationalities and a UK control group. The dataset contains information on organisation structure, control, human resource management, sales and marketing management, communication, research and development/development of products and services, procurement, company philosophy, strategy, and overall changes to the 201 UK subsidiaries that were surveyed.