Found these statistics on the web

http://www.ofcom.org.uk/static/archive/itc/latest_news/press_releases/release.asp-release_id=725.html

Estimated Audience Share Figures for Selected Television Channels Received in the British Islands in the 12 Months Ended 30 June 2003

Channel Percentage audience share
Anglia 1.4
Animal Planet 0.1
At the Races 0.1
BBC1 26.3
BBC2 11.3
BBC3 0.1
BBC4 0.1
BBC Choice 0.1
BBC News 24 0.4
Bid-Up TV 0.1
Biography Channel 0.1
Boomerang 0.4
Border 0.3
The Box 0.2
Bravo 0.2
Carlton 2.1
Cartoon Network 0.3
Cartoon Network Plus 0.1
Central 3.5
CBBC 0.1
CBeebies 0.7
Challenge TV 0.3
Channel Four 9.6
CNN 0.1
CNX 0.1
Discovery 0.3
Discovery Health 0.1
Disney Channel 0.3
Disney Playhouse 0.1
Disney Toon 0.1
E4 0.7
Eurosport 0.2
Five 6.4
Fox Kids Network 0.2
GMTV 1.5
Granada Men & Motors 0.1
Granada Plus 0.4
Granada Television 2.9
Hallmark 0.4
The History Channel 0.1
The Hits 0.1
Home & Leisure 0.3
HTV Wales 1.1
HTV West 0.8
ITN News 0.1
ITV2 0.7
Kerrang 0.1
Kiss TV 0.1
Living 0.6
LWT 1.5
Magic TV 0.1
MTV 0.2
MTV Base 0.1
MTV Hits 0.1
MTV2 0.1
Meridian 1.9
National Geographic 0.1
Network 2 0.1
Nickelodeon 0.5
Nick Jr 0.2
Nick Toons 0.1
The Paramount Channel 0.3
QVC 0.1
Reality TV 0.1
RTE1 0.1
S4C Wales 0.2
The Sci-Fi Channel 0.3
Scottish & Grampian 2.1
Sky Box Office 0.1
Sky Cinema 0.1
Sky Cinema 2 0.1
Sky Moviemax 0.2
Sky Moviemax 2 0.1
Sky Moviemax 3 0.1
Sky Moviemax 4 0.1
Sky Moviemax 5 0.1
Sky News 0.7
Sky One 1.7
Sky One Mix 0.1
Sky Premier 0.4
Sky Premier 2 0.2
Sky Premier 3 0.2
Sky Premier 4 0.2
Sky Premier Widescreen 0.1
Sky Sports 1 1.0
Sky Sports 2 0.3
Sky Sports 3 0.2
Sky Sports Extra 0.1
Sky Sports News 0.2
Smash Hits 0.1
TCM 0.2
TMF 0.1
Trouble 0.2
Tyne Tees 1.2
UK Food 0.1
UK Gold 0.9
UK Gold 2 0.1
UK History 0.1
UK Horizons 0.2
UK Style 0.6
Ulster 0.7
VH-1 0.1
VH-1 Classic 0.1
Westcountry 0.6
Yorkshire 2.4
Zee TV 0.1

from 2003 but still gives a good idea about audience percentages

Cheers, Ratboy