42ac White marking on the lower half of an equine mammal's leg roughly covering the pastern, fetlock and the cannon bone area (4) S?C? SOCK ?
23ac The title given to the winner of a prize for Welsh verse at an Eisteddfod (4) ???D
24dn Actor who starred as Javert in the original London cast of Les Misérables (5) ??L?M
53ac Fiver's brother in Richard Adams's 1972 novel Watership Down (5) ?A?E?
Thanks all. Not happy with the clue for 44dn System of code used by the Germans during the Second World War(6) =ENIGMA I thought that was codename we gave it not what the Germans called it.