Yesterday evening (Friday) when searching for something interesting to watch on the Hotbird Satellite I found Polish speedway on a channel called EDUSAT.
Two meetings were shown, the first was an individual won by Marcin Jedizejewski ?, and the second a league match, possibly 1 or 2 Liga. I don't know the teams because there wasn't any on screen details for this one. Perhaps one of our Polish friends will know.
For anyone with a Satellite receiver (not Sky) details are:
Hotbird 13 deg East, frequency 11283V, 27.500, currently free.