According to someone I heard on the radio yesterday there are about 20,000 boxes in the country that will lose channels when retuned - a few of the early Freview machines (Daily Mail says - changes to the transmissions... will also mean that 22,000 older digital TV set-top boxes will no longer work.) - the Daily Mirror says 460,000 sets affected.
http://tvretune.co.uk/troubleshooting/
What a mess... it all is...
Peccavi
October 2009