As described in post about the 65" tv, you can use the code 50MEGA to get £50 off.
Then either £11 cashback at either Quidco or TCB.
If you bank with nationwide and have signed up to the rewards, for the next 4 days you can get 5% cashback via that.
You can also spread the cost over 12 months at 0% on AO if needed.
Excellent tv for under £500, I have been waiting for the right deal but went for this via the nationwide cashback.