Three, Voda promise £10-a-month or below mobile tariffs in bid to sway CMA on merger

Tie-up probe concerned the pair's union would mean higher bills, hurt MNVOs

Vodafone and Three UK have pledged to maintain retail mobile tariffs at 10 or below for at least two years after their proposed merger, in response to the UK market watchdog's insistence their alliance would lessen local competition....