O2 (UK) they can do it too" in reference to Vodafone and EE, O2's biggest competitors and the UK's top three mobile-telecoms companies. O2 (UK) Telefónica UK Limited (trading as O2 – stylised as O) is a telecommunications services provider in the United Kingdom, owned by the Spanish multinational Telefónica, and is headquartered in Slough. With 25 million subscribers (as of December 2017), O2 is the second-largest mobile network operator in the United Kingdom after EE, with Vodafone in third place. O2 was formed in 1985 as Cellnet, a 60:40 joint venture between BT Group and Securicor. In 1999, BT Group acquired
Frontier Communications of Breezewood an LLC in 2003. Frontier Communications of Breezewood Frontier Communications of Breezewood, LLC is a Frontier Communications operating company providing local telephone services to Breezewood, Pennsylvania. It also provides telephone service to Needmore, New Grenada, and Warfordsburg. The company was founded in 1974. It was acquired by Rochester Telephone as it began to expand nationally. In 1994, Rochester Telephone changed its name to Frontier Corporation, and the local operating company became known as Frontier Communications of Breezewood, Inc. Global Crossing acquired Frontier in 1999, and Citizens Communications acquired Global Crossing's Frontier assets in 2001, and has owned it since. The