Government view here (check out the Guide to Digital Television and Digital Switchover):
http://www.digitaltelevision.gov.uk/
Industry view here (heck out the DTB Publications/Books and Papers):
http://www.dtg.org.uk/
...and in particular this document which deals with the problem of 'digitising' the 30 odd million secondary TVs:
http://www.dtg.org.uk/publications/b...ution_v1-1.pdf
There are still too many things that are not right about 'digital television' for me to be convinced that it's a good thing.