48 Net asset value attributable to unit holders.

(XLS:) Net asset value attributable to unit holders 2012

As at 31 December 2012

Total
£m

Level 1
£m

Level 2
£m

Level 3
£m

Amortised cost
£m

Net asset value attributable to unit holders

7,702

7,702

(XLS:) Net asset value attributable to unit holders 2011

As at 31 December 2011

Total
£m

Level 1
£m

Level 2
£m

Level 3
£m

Amortised cost
£m

Net asset value attributable to unit holders

6,159

6,159

Amounts attributable to unit holders are repayable on demand and the Group is responsible for ensuring there is sufficient liquidity within the corresponding asset portfolio to enable the liability to be met as it falls due.