Depends on what kind of a TV it is. HD(and what resolution) or SD?
But I am assuming you'll be burning SD DVDs, and you live in England?
DV PAL 5:4 is 720x576px with anamorphic pixels for 16:9 and 25fps.
HD goes up to 1440x1080px with lots of variations but the pixels are square.
btw. widescreen generaly means 16:9 aspect ratio. Unless your talking about computer monitors.