Whether to allow a Vodafone/H3G merger is essentially a trade-off between range of consumer choice and costs of network duplication. With the need for the former diminishing and the latter increasing, the case for approval is strengthened.

H3G is in a negative spiral of small scale, low investment, and low returns. A merger would allow it to form part of a more credible competitor with a transformed returns profile—without rising prices or reduced industry investment levels.

The CMA’s aversion to mergers has been very stringent of late—an approach that risks deterring investment and compromising competitiveness. Consolidation in UK mobile is unlikely to happen without a change of mindset.

Iliad has reportedly tabled a bid for Vodafone's Italian operations—unsurprising given challenges in that market for both players.

Press reports appear to be a concerted effort to pressure Vodafone to deal. There is the potential to resolve Vodafone's leverage issues, but there are implications for Vantage Towers.

Regulatory approval remains very much in question, but it makes sense to test the system with the potential for very positive read-through elsewhere. If a deal can be struck, it will likely be just the beginning of a long and checkered road.