This paper provides empirical evidence on the effects of cross-border M&As on investing firms' domestic performance in the U.K. and France. We build a new firm-level dataset that combines a global M&A database with balance sheet data for the years 2000-2007. Combining matching techniques with a difference-in-differences estimator, we find that cross-border deals boost on average domestic employment, sales, and investment, and they are not accompanied by a downsizing of the domestic labor force in neither of both countries. Further, acquisitions in knowledge-intensive industries lead to improvements in domestic productivity. Our results display some heterogeneity across industries and types of acquisitions, suggesting a connection between the motives for international acquisitions and their resulting effects.