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25 Retirement benefit obligations (continued)

2010 2009
Reconciliation of defined benefit obligation £m £m

Defined benefit obligation at the beginning of year 2,352.0 2,413.0
Current service cost 96.7 96.1
Interest on pension liabilities 159.6 149.9
Actuarial losses/(gains) 325.1 (234.4)
Benefits paid (80.4) (72.6)

Defined benefit obligation at the end of year 2,853.0 2,352.0

2010 2009
Reconciliation of value of assets £m £m

Value of assets at the beginning of year 1,622.0 1,859.0
Expected return on assets 135.0 144.5
Actuarial gains/(losses) 164.7 (514.5)
Benefits paid (80.4) (72.6)
Contributions* 107.1 205.6

Value of assets at the end of year 1,948.4 1,622.0

* During the year to 30 January 2010 £11.1m of contributions were received in respect of additional investment in Ocado. During the year to 31 January 2009 £127.7m of contributions were received in respect of the group’s disposal to the pension fund of its investment in Ocado.

2010 2010 2009 2009
Analysis of assets % £m % £m

Equities* 71 1,392.3 73 1,173.9
Bonds 14 263.9 15 250.9
Properties 8 149.5 11 172.9
Other 7 142.7 1 24.3

1,948.4 1,622.0

* Equities include the investment held in Ocado.
2010 2009
Actual return on assets £m £m

Expected return on assets 135.0 144.5
Actuarial gains/(losses) 164.7 (514.5)

Actual return/(loss) on assets 299.7 (370.0)