We went on the red bus, CitySightSeeing and were pleasantly surprised. It rained most of the time but we sat upstairs in the covered area at the front, a very pleasant lady driver, with a recorded commentary which we thought was excellent. All just for us two. I think the weather had put people off as we were the only 2 on the bus the whole time!! The tour lasted an hour and we thought very good value for money at £8 pp for a 'Senior' ticket. Chester is beautiful and I can't wait to go back again as this was our first visit.