The 42nd Highlanders, aka The Black Watch.
The rank and file are DK 188, the officer is BN 37, the piper is BN 38, the sergeant is BN31. I'm not sure what the ensigns are, there is no listing for a highland ensign in my HH catalogue, they could be castings from a conversion.
The DK figures and the BN 37 officer have sporrans, the others were without. I know the Black Watch wouldn't have worn sporrans in the field, but I don't like to remove bits of original castings if I can help it, so I added green stuff sporrans to the figures which were lacking them.
*EDIT" I just found the following link, indicating the ensign was a David Clayton creation, BN39.
http://www.vintagewargamingfigures.info/rblack/hinlist.htm