They do indeed have a great sense of humour over there.
When one of the choppers was going out on a job, the PC we were with asked which way they were going, the pilot looked over, blank look on his face and said.........'errm....UP!'

The twitter feed is indeed a must though, and very informative.
Was a fantastic day out, and would recommend it to any of their Twitter followers. Next time you see a competition from them, enter it.