Vodafone, the world's biggest revenue-generating mobile service provider, is looking to get a bit larger. The company is reportedly looking at acquiring the UK wing of T-Mobile, which is currently valued at $4.2bn-$5.6bn.

Such a move would give Vodafone 40 percent of the UK company's mobile revenue, making it the largest mobile provider in that country. That position is currently held by the Telefonica-owned O2, which has a 27 percent market share.The move would likely be subject to a good deal of scrutiny by regulators.