Yep, with a non powered arial and a genius mod I discovered by accident:D
I have this areiel(£8 ebay)
http://www.pixmania.co.uk/uk/uk/2394374/art/one-for-all/indoor-aerial-uhf-vhf-fm.html
Now here's what you do
1) extend both the antennas out
2) push the right antenna slightly back and the left antenna slightly forward
3) push the triangle front loop right down(forward)
Now the important genius bit
4) place an empty aluminium can(I'm using a pepsi one :-)) on the pushed down loop and lean it against the left antenna.
Without the can I get maybe 7/8 good channels and they sometimes get bitty/pixalated, but with the can there I get all the channels and I haven't lost the picture yet.
PS I was going to post a pic but the batteries in my camera are dead, if anyone would like to see a pic let me know and I'll post one tomorrow.
PPS, just an experiment, if you can be bovvered, all the people above using a similar arial to mine(powered or not) try the can trick and let us know if it works for you.