Depending on your TV region, farmerjones, you might want to consider whether you could find a big screen but slimmer LCD or Plasma in the 300 to 600 pounds region.
I mention TV region, because in the not-too-distant future there will be a lower opportunity for selling an old TV in the newspaper / on Ebay, as it would need a Freeview or FreeSat or Sky box to work, and if you were getting a newer flat screen TV, it would probably have Freeview as minimum...
and multiple inputs.
Some TVs hace SCART and HDMI, and quite a number have one VGA input. As you have a laptop, it would probably be possible for you to test out in a specialist TV shop (and less easy in Asda / Comet / Currys / etc) just what your laptop display would look like on a big TV.
I don't use Skype, but you could perhaps do a window 'capture' (press ALT + Print Screen at the same time, then go into MS Paint and paste in the copy of the Skype window). It's a still image, of course, but you'd get some idea of how it looks.
You could also play a DVD and check how that looks.
I'm only mentioning the option of a new TV because my sister is just considering what she will need when her region (Central) loses the standard TV signals. They have Sky in the lounge and other TVs in the house can watch a UHF (coaxial) feed from the Sky box.
In the kitchen, for example, she could be watching what's on Sky, or, if her DH is watching sport, can {at present} switch to BBC 1, BBC 2, ITV etc. She won't be able to do so without a Freeview box (or some other option) in future, as the Sky output would be the only analogue signal the TVs could accept without some sort of box for digital services being added.
Since digital switchover will be nationwide over a number of years, it is an issue many others will also need to consider in due course.