Telecom Italia has blocked US private equity firm KKR from access to its books, signalling the likely end of KKR’s efforts to acquire the Italian incumbent. KKR made a non-binding bid for TIM last year, offering €10.8bn, but since then, a new group CEO, Pietro Labriola, has taken the helm and put a restructuring plan in place, including proposals to separate the network and services businesses to unlock shareholder value and attract third party investors. The split would pave the way for a merger with rival Open Fiber, creating a single national fiber network that has been demanded by some of the Italian government. Formal discussions between TIM and KKR only began in late March, but the US firm said…