MArtyn,the old type of helmet was British made(used to have one unissued in its box but long sold im afraid).
The HMAK ones are indeed Danish,now if they are just ex Brit ones sold to the Danes and re issued or newly made by the Danes i dont know but all the Danish stamped/marked ones i have seen have a nasty thick textured paint coating on them,not saying they are all like this but ALL the ones Ive come across have been.