Telefónica S.A.

Virgin Media O2 is reportedly preparing a sweeping restructuring that could put thousands of jobs at risk, with one estimate suggesting as many as 4,000 positions may be affected. The scale of the potential cuts points to a deeper challenge for the Liberty Global and Telefónica joint venture: lowering costs without weakening the network, customer experience and growth investments needed to compete in an increasingly unforgiving UK telecom market.