This is the Canon 500d with the IS version of the 18-55mm lens (confirmed by Comet reps in the comments).
1- Comet have reduced this to £515.
2- Go through TCB. Place a click and reserve order.
3- Register for comet perks
4- Print the 10% off gifts email - see link in post 2
4 - Collect in store. Pay £463 (£515 less 10%)
5- Claim £30 back from Canon.
£433.5 + potential £15.45 cashback*.
*Cash-back may not payout due to voucher use.