22 Trade and other receivables

Group Company
2009 2008 2009 2008
£m £m £m £m
Trade receivables 11.9 14.9
Amounts owed by subsidiaries 631.1 696.9
Other receivables 10.5 12.2 0.2 0.1
Prepayments 13.2 7.1 2.1 1.0
Sales and social security taxes 0.6
Accrued income 11.0 4.5 0.3
46.6 38.7 634.3 698.0
2009 2008
£m £m
Group trade receivables are split as follows:
less than three months due 10.0 13.7
between three and six months due 1.7 0.2
between six and twelve months due 0.2 1.0
11.9 14.9

Group trade receivables includes a provision for bad debts as follows:

2009 2008
£m £m
At 1st January 1.3 1.2
Additions 0.7 0.8
Released (0.1) (0.7)
At 31st December 1.9 1.3

The provision for bad debts is split as follows:
less than six months due 0.4 0.3
between six and twelve months due 0.2 0.1
over twelve months due 1.3 0.9
1.9 1.3

None of the amounts included in other receivables are past due and therefore no ageing has been shown.