KKR, a leading global investment firm, has completed the acquisition of Trainline, the UK's leading online platform for selling rail tickets to both consumers and businesses. Financial terms were not disclosed. "Our vision is to transform Trainline into a leading international ecommerce platform and an indispensable partner of the smartphone-enabled digital mobility landscape. We are excited to be able to accelerate this journey with an experienced and global investment partner like KKR." Doug McCallum, Trainline Chairman.