We have done plenty of hop on off bus tours, but this was by far the worst! Firstly, the buses only come every hour not every 20 minutes so that really defeats the object. The speed the driver drove was ridiculous! There was no time at all to enjoy the sites or take pictures. It was a whistle stop tour and we were back in 45 minutes ll All 'stops' complete although no-one got off - it didn't even slow down long enough to stop! The speed also makes dodging branches quite traumatic and very distracting so there is little enjoyment for fear of losing an eye. For £15 a head we could have taken a taxi in far more comfort. Prepare also to get very chilly and windswept. We disembarked dishevelled and disappointed. Lesson learnt. Is there a way to ask for a refund?