Orange and T-Mobile have been given the all-clear to merge their UK networks by the European Commission.
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Gervais Pellissier, deputy CEO and CFO of Orange owner France Télécom, said the way was now clear to "create a strong operator and to offer high-quality network and services to our customers" and pledged to "generate significant value for our shareholders".
The new business is expected to post pro forma 2009 sales of £7.57bn and EBITDA of £1.38bn.
However, mobility experts have long maintained that networks in other European countries control far larger tranches of the market than Orange and T-Mobile will.
The board of the joint venture will be led by representatives of both firms, with Deutsche Telekom CFO Tim Höttges and France Télécom's Gervais Pellissier holding the post of non-executive chairman on a rotating basis.
The management team will be led by Orange UK CEO Tom Alexander as chief executive and T-Mobile UK CEO Richard Moat as COO.
Both France Télécom and Deutsche Telekom have committed to maintain separate branding in the UK until 2012.
A version of this story appeared on MicroScope.