Seen this posted on another forum so just in case anyone fancies seeing a free derby game this is the info:

"Watch the biggest game in the Portugese football calendar, the Lisbon Derby, on FreeSports which is available on Freeview HD channel 95, Sky channel 422, Virgin TV, 130/553, FreeSat 252, TalkTalk 95, BT Vision channel 95 & via TVPlayer"

7PM KO. Not for everyone but probably worth a watch if you aren't travelling to 'Uddersfield.