The Earl of Rhone ceremony accounts for one of the Hobby Horses and the guy riding the donkey backwards.

The step (clog) dancing was possibly Dartmoor stepping because the melodeon player sounded a bit like Bob Cann - again, checkable.

The Green Man was possibly the Hastings Jack In The Green Festival?

Interesting to see the two horses at Minehead - I've only ever seen the one which goes around the festivals - The Town Horse?

Between us we can tie all this down and maybe win a prize! :-)