The leading London-based venture capital investor was dismissed following complaints about his management style. : London-based venture capital firm Atomico has dismissed one of its most senior partners, Hiro Tamura, following complaints from staff over his management style. The Midas List Europe investor headed up Atomico’s investment team and was an earlier backer of startups Stripe, MasterClass and Telegram. Tamura was suspended Friday, February 18, following a complaint about his management style from Atomico staff members and was dismissed Tuesday, February 22, following an internal investigation.