Unlucky about the TV mate, but good news about the cancellation, hope it is all working by today 
TV’s can be fairly cheap now, depends what sort of size, Argos do some cheap flatscreen jobs, 32 inch should be around 350 mark, sainsburys are doing a special on 37" for 450 I think, sony bravia.
But if you want an old style TV you can pick them up cheap as chips on Ebay, only issue is that you pick them up yourself but will only cost you about 30 quid max for a decent one. If you want a hand picking one up then just let me know