There were also a small number of Green-winged orchids.
Besides the orchids, there were lots of other nice stuff. A small group of wheatears in one of the arable field I crossed to get to the coast, several butterflies including Small tortoiseshell and Peacock. Best though were the reptiles; I saw 2 Common lizards and this Wall Lizard pictured below (with identification help from a fellow orchid enthusiast - I was not aware it occurred in Britain), and the best sighting of an adder I have had, moving amongst the limestone rocks at St Aldhelm's Head. Quite menacing and fortunately my wife missed this trip as I think she would have been terrified (a life-long ophidiophobe).
An excellent day, definitely worth the long journey and delays on the M3.