Liberty Media interested in NTL

Rumours are circulating that Liberty Media is in talks with debt-laden NTL about buying a stake of between 25-51%. Interestingly Liberty already own 25% of Telewest and would try to merge the two. Given they are the biggest two cable companies in the UK by far, I would imagine it may be investigated by the Mergers and Monopolies commission but given the fragile nature of the cable business in the UK, they just might pass it.