Cook will step down as CEO of the Mariners in February next year to head up the EFL's charity the EFL Trust. Cook has previous experience working for charitable organistaions before being appointed CEO at Grimsby in 2021.

Trevor Birch, CEO of the EFL, said: “I’m thrilled to welcome Debbie to the EFL, bringing with her a wealth of expertise and leadership skills across the sports and charity sectors. I have no doubt that Debbie will make a significant contribution to the League’s Executive team while overseeing operations of the EFL Trust.”    

Liam Scully, Chair of the EFL Trust, said: “On behalf of the EFL Trust Board, we’d like to thank our senior team for their unwavering commitment and achievements in managing the charity over what’s been an uncertain 10 months for the EFL Trust. We welcome Debbie to the role and look forward to building on the foundations that have been provided by the network’s outstanding work in recent years.” 

Debbie Cook said: “EFL Clubs make a huge impact on communities on a scale which is unprecedented in this country and I’m excited to be joining the EFL as we seek to build on the amazing work that goes on day in, day out. It's been a privilege to witness at Grimsby Town Football Club just how much a club can represent a community and impact the lives of so many people. The lessons I have learned during my wonderful period at the Club will inform much of my work and I am excited to take on this new challenge.” 

Grimsby Chairman Jason Stockwood said, “On a personal level, I’m delighted for Debbie. People won’t know that when we first met, we said that our job is to make you successful and if you get a job that’s bigger and better, you’d have my complete blessing and support – and that’s what this is. But she’s been brilliant for this football club, a massive part of the culture changes and a great colleague and ally for me over the last couple of years. I’ll miss her, but I’m thrilled for her and it’s no less than she deserves. Debbie and her family will always be welcome at GTFC.”