T-Mobile and Orange’s plan to merge their UK businesses into a JV would create the UK’s largest mobile operator by some margin, and the enormous planned synergies of £545m per annum are actually quite unaggressive given the cost overlap
This achievement would be moderated by ‘integration leakage’, i.e. increased churn caused by customers leaving who were initially attracted by an aspect of one of the operators that disappears after integration, but the net result should still be positive for the JV
The remaining UK operators will benefit both from this churn and the reduction in competitive intensity associated with five players dropping to four. While all the operators may win, UK consumers might lose, with regulatory clearance thus still far from certain