Excellent sightseeing tour. We got on add party of...

Excellent sightseeing tour. We got on add party of an offer with our Railcard to London which was an added bonus.
Earlier in the day the queue was not massive at all and we were waiting for about 10 minutes. Once we were finished the queues were much longer.
Great 360 degree views around the city and some really nice skylines. Wonderful if you want to take photos.