In reply to Maurice52: looked at it but already had a turbo so opted to use trainerroad.com with an ant+ USB (suunto move stick) in my PC to link to my garmin speed and cadence sensor and heart rate monitor.
I do structured training (injured at the minute due to major off on mtb!) and can cancel the £6 a month if I want anytime and rejoin. I have a few of the sufferland videos that link with the trainerroad too.