This study examines the stock picking and market timing abilities of 10 UK investment trusts between 1995 and 2016. Results show little evidence of outperformance against the FTSE All Share index. Only 1 fund showed evidence of superior stock picking, while no funds showed evidence of superior market timing. Consistent with other studies, funds with more concentrated portfolios tended to perform better. The study aims to evaluate the investment skills of UK fund managers and determine if fund concentration impacts performance.