The move ends a three-year relationship with Kaizo and comes after a four-way competitive pitch that included the incumbent (PRWeek, 7 April).
Kingston has operated a telephone system for the residents of Hull for more than a century. But it has been diversifying its business in the past couple of years towards B2B services and away from overreliance on consumer markets and fixed-line communications.
A major part of Nelson Bostock's remit is to promote Affiniti, the company's national B2B brand. Affiniti was created last year from the coming together of Kingston's Business Services division, Omnetica and Technica. Its launch was promoted by Kaizo.
Nelson Bostock account director Lisa Allen leads the account team.