HM Treasury placed a technical Note about the total liability of unfunded public service occupational pension schemes in the Library of the House on 2 March 2006, Official Report, columns 388-90W following an oral Statement by my right hon. Friend the then Chief Secretary to the Treasury (Des Browne).
The Government Actuaries Department do not estimate pension liabilities for individual departments but for different pension schemes. UK-based staff at the Foreign and Commonwealth Office are covered by the Principal Civil Service Pension Scheme (PCSPS). Table 1 of HM Treasury’s Note of 2 March 2006 sets out estimates of the liabilities of the PCSPS.