Here's another complete list:
http://www.lyngsat.com/28east.html
You can receive any FTA (free-to-air) channel (listed in 'raffle ticket yellow') without a card. You will need a card to watch any of the FTV (free-to-view) channels - notably ITV1/2 and Channel 5.
You don't need a Sky system to receive the FTA channels - any digital satellite receiver will do. If you have a hunt around Lyngsat you'll find plenty more FTA channels from other satellites too.