just an update
i ended up with one of these given too me by a friend
http://www.amazon.co.uk/Neet%C2%A9-S.../dp/B001DAHS5Q
problem is it will not auto switch with the virgin tivo and the Phillips BDP2900/05 blue-ray
switches fine pressing the manual button but as my dad is a) not tech savy in the slighest and b) a pain in the arse he'd rather do without
anyone any ideas?? tivo is in input 1 and blueray is in input 2