Disclosure in accordance with the Law of May 2, 2007

Friday, August 21, 2015 —

The enclosed information constitutes regulated information as defined in the Royal Decree of 14 November 2007 regarding the duties of issuers of financial instruments which have been admitted for trading on a regulated market.

Notification of important shareholdings

Telenet Group Holding NV ("Telenet" or the "Company") (Euronext Brussels: TNET) hereby discloses the following information in accordance with Article 14 of the Law of May 2, 2007 and the related Royal Decree of February 14, 2008:

On August 21, 2015, Telenet received a notification from Liberty Global Plc and her affiliate Binan Investments B.V. in accordance with article 74, ยง8 of the Law of April 1, 2007 on public take-overs. Liberty Global Plc and Binan Investments B.V. herein provide an update of their notification of August 22, 2014 according to which Binan Investments B.V. declared to hold a stake in Telenet that exceeded 30% of the securities holding voting rights. This notification is in turn an update of the prior notifications Telenet received on September 18, 2007, on August 28, 2008, on August 27, 2009, on August 31, 2010, on August 29, 2011, on August 28, 2012 and on August 27, 2013.

In this notification, Liberty Global Plc and Binan Investments B.V. declare, inter alia, that during the period between 22 August 2014 and 20 August 2015 no securities holding voting rights in Telenet have been transferred by or to Binan Investments B.V.

The complete text of this notification is also available on our investor website http://investors.telenet.be.