A BT spokesman said: "We can confirm that BT is seeking permission from the Court of Appeal to appeal the court order concerning BT’s claim for judicial review of the Treasury’s decision on public sector pension increases.
"We are also seeking permission from the Supreme Court to appeal the Court of Appeal’s decision concerning the index for calculating pension increases for section C members of the BT Pension Scheme.
"In both cases, we believe that this is the right course of action taking into account the interests of all our stakeholders including past and present employees and BT’s shareholders."
maria.espadinha@ft.com