Argos -( £449.99 ) - £329.99 after cashback and voucher!
I know it's not the cheapest 40 inch TV out there - but this will go on the internet for i-player and skype and allows HDD's etc. and it's a Sony! (yeah - not as good as they used to be! - but still pretty good!)
The TV is £449 in Argos - but til Wednesday you get a £20 voucher when spending over £100 from them, So making it £429.
Then you can claim a £100 cash back from Sony for this model (til 25/12/11) ( paid in 28 days on a Visa debit card ) as part of their Smart offers promotion, making the TV effectively £329.99.