Mackie’s Crisps | Food and Drink PR | Holyrood PR by Lucy Donaldson, Tuesday, January 7th, 2020 Mackie's Crisps works with food and drink PR experts at Holyrood PR agency in Edinburgh, Scotland to showcase its award-winning produce. by Lucy Donaldson, Tuesday, January 7th, 2020 Mackie's Crisps works with food and drink PR experts at Holyrood PR agency in Edinburgh, Scotland to showcase its award-winning produce. Mackie’s Crisps works with food and drink PR experts at Holyrood PR agency in Edinburgh, Scotland to showcase its award-winning produce.