Wood (pictured) comes to the firm after an 11-year spell with National Savings & Investments, where she last held the role of head of customer experience. Before that, she spent six years at Co-operative Insurance.

At Grass Roots she will manage a team of account managers focusing on financial services, retail, automotive and telecoms clients.

Head of commercial relations Jamie Thorpe said: “We are very happy to have Sarah on board. Our business is growing, so it’s a pleasure to welcome new faces. With her expertise in customer experience, I’m confident that Sarah will strengthen the day-to-day delivery of our clients’ programmes, support our account managers and be a valuable member of the team.”