Notes to the consolidated financial statements

14. Trade and other receivables continued

As at 31 March 2009, trade receivables at nominal value of £31.7 million (2008: £27.3 million) were impaired. Movements in the provision for impairment of trade receivables were as follows:

   £m 
At 1 April 2007  24.7 
Charge for the year  13.7 
Utilised  (11.1)
At 1 April 2008  27.3 
Charge for the year  17.5 
Utilised  (13.1)
At 31 March 2009  31.7 

At 31 March, the analysis of trade receivables overdue but not impaired is as follows:

  0–3 months
 £m 
3–12 months
 £m 
12–24 months
£m 
24–36 months
£m 
36–48 months
 £m
>48 months
 £m 
Total
 £m 
2009 0.5 23.9 10.3 5.3 2.6 0.4 43.0
2008 0.4 21.4 9.1 4.7 2.0 0.4 38.0

15. Cash and cash equivalents and short term cash deposits

For the purposes of the consolidated cash flow statement, cash and cash equivalents comprise the following at 31 March:

  31.3.2009
£m 
31.3.2008
 £m 
Cash at bank and in hand  40.0  92.3 
Short term deposits  68.8  201.9 
  108.8  294.2 
Bank overdrafts  (16.5) (27.8)
Cash and cash equivalents  92.3  266.4 
  31.3.2009
£m 
31.3.2008
  £m 
Short term cash deposits > 3 months  120.8 – 
Short term cash deposits < 3 months  39.8 – 
Short term cash deposits  160.6 – 

Short term cash deposits of £39.8 million, with a maturity of less than three months represent amounts on deposit at fixed rates with the Northumbrian Water Pension Scheme.

16. Trade and other payables

  31.3.2009
£m 
31.3.2008
£m 
Trade payables  10.4 9.7
Other payables  19.2 16.7
Interest payable  35.9 38.7
Accruals and deferred income  82.3 87.8
  147.8 152.9