yay! TV's working!

Finally got my tv set up! Unbelievably, it turns out that the problem
was both with the aerial AND the freeview box. I bought an amplified
internal aerial, plugged it into the tv, and it picked up some
channels. Plugged it into the freeview box, and same as before: sagem
logo, but no welcome screen and no setup screen. So in desperation I
took the freeview box back to argos, and swapped it out for a new one;
plugged it in and yay! it worked :-)

So now I'm happy. Only about 85% unpacked still, but happy :-)