The new associate directors include Sue Jenvey in the digital team, Anthony Donaldson from planning, Steven Gray in promotional marketing and creatives Alan Grove and Steve Rogers.
They will join Bob Blandford, Leroyson Figueira and Charlotte Amos on the associate board, with the remit to continue growing the business, while focusing on creativity and career management for all Haygarth employers.
Haygarth has also promoted James Tweddle and Angus Gibson in the promotional marketing team to account directors and Julia Nicholls to head of creative services.
Troy Squires and Gill Tait have also been promoted to senior account managers in the design team.
Sophie Daranyi, CEO at Haygarth, said: "These are all really well deserved promotions that bolster our senior management team to focus on our core client base, drive new business and evolve our agency offering."
Earlier this month Haygarth was rated one of the 100 best companies to work for in the UK for the fourth time running in the Sunday Times annual listing.