Ummmm... very large part of my job to taste test ice cream so a bit of an expert..
no one has mentioned Waitrose Cornish, 'tis very, very good and incredibly popular with a wide range of people so should please all at a dinner party.
Kelly's very good although there are nicer Cornish brands but hard to get outside cornwall.
Anyone got a Mackies pack to hand? I think it is still made in Scotland but we were asked to quote for making it a few years ago and we are in Cornwall...found that a bit bizarre