I was lucky enough to work with Issy when she was in New Zealand and I then became her manager when she came into her first UK government job. We both progressed in lockstep, working together for several years as we gradually grew our work area. It was clear from the first time working with her how much talent she had and how she combined that with a charming, joyous personality. From her arrival onwards we spoke every day that we were both working, gradually shifting a great working relationship blending into a great friendship. Issy achieved an incredible amount in her time in government, and the impact of that work will be felt around the world for years to come and will benefit people who never knew her, and who will have no idea that her work has shaped the world around them. I miss her insight and ability to think creatively, her knack for seeing opportunities, and her willingness to be ambitious and aim big just to see what could be achieved. But more than any of that, I miss her friendship and her sense of humour and will mourn not getting to see her continued growth as she found herself. All of us who worked with her will carry her memory with us in all that we do furthering international standards as she wanted to see happen, and those of us who were lucky enough to also know her as a person will continue to feel the loss of an exceptional colleague but an even better friend.