Blue Rubicon, which handled corporate PR for the company's Home & Personal Care division took over the account, which unifies corporate comms across four businesses on Monday.
Fishburn Hedges - which handled corporate PR for umbrella group Unilever UK - and Four Communications lost out in the pitch for the consolidated account.
The brief covers corporate comms for the Ice Cream & Frozen Foods, UK Foods and UK Home & Personal Care divisions.
Blue Rubicon managing director Fraser Hardy reports to UK Foods head of comms Duncan Bogie, UK Home & Personal Care PR chief Emma Flack and Ice Cream & Frozen Foods head of comms Helen Lo.
It is thought that Blue Rubicon could pull in as much as £250,000 a year in fees.