It is understood she will undertake freelance projects in the future.
Chief executive Julia Willoughby said the move was amicable: ‘Liz has been with the company for nine years and during this time has helped it to grow and flourish. I know that she has not taken the decision to leave lightly but she has the full backing of the board and we wish her well.’
Willoughby added that the agency had no plans to replace Lewis-Jones and that she would assume Lewis-Jones’s responsibilities.
Willoughby PR handles clients from a number of sectors including English Partnerships, Glen Dimplex Cooking and Bullring.