7. Warranty deferred revenue

13 weeks
ended
2 August 2008
$m
13 weeks
ended
4 August 2007
$m
26 weeks
ended
2 August 2008
$m
26 weeks
ended
4 August 2007
$m
Deferred revenue, beginning of period 246.5 236.3 246.6 232.7
Warranties sold 33.2 34.7 71.3 74.3
Revenues recognised (37.7) (35.9) (75.9) (71.9)
Deferred revenue, end of period 242.0 235.1 242.0 235.1

Deferred revenue represents income under extended service warranty agreements and voucher promotions.