Kathryn Pretzel-Shiels
Interim CEO

Kathryn Pretzel-Shiels was appointed as Interim CEO at Bowel Research UK in October 2025.
Kathryn is a highly respected international business and marketing leader, known for developing customer-centric strategies and building commercially impactful B2B and B2C relationships.
She spent 28 years at American Express, working across three continents and delivering consistent growth in sales, marketing, and business development across multiple business units. Her leadership was marked by a strong focus on customer engagement, increasing loyalty, and the development of high-performing, multicultural teams.
In 2016, Kathryn became Marketing Director at PAUL Ltd., where she led on brand, digital transformation and oversaw customer engagement, new product development, PR, competitor insights, and online and partnership sales.
Kathryn has held board positions with the International Women’s Forum UK – where she chaired the Programme Committee, Bowel & Cancer Research, Bowel Research UK, United Way UK, Springboard UK, and the International Hotel & Restaurant Association, reflecting her commitment to leadership and social impact.
Louise Robertshaw
Interim Lead for Fundraising and Communications

Louise joined Bowel Research UK in January 2026, to support the development of its fundraising and communications activities.
Louise is an experienced charity leader, with expertise in income generation, marketing and communications. She is passionate about enabling organisations to grow by inspiring supporters to take action.
Louise has held senior positions in the not-for-profit sector, including Guide Dogs, London’s Air Ambulance, Sense and Sense International.
She also holds board positions at Moorfields Eye Charity, where she chairs the fundraising and communication committee, and Thomas Pocklington Trust.
Nicole Naylor
Operations Manager

Nicole is Operations Manager at Bowel Research UK. She undertakes a variety of finance, HR and operational activities to support the charity.
Nicole has worked in the healthcare sector for over 25 years, working previously at the Royal College of Physicians London and the Patient Information Forum.
Min Wilkinson
Trusts Fundraising Manager

Min is Trusts Fundraising Manager at Bowel Research UK. She is responsible for raising income from trusts and foundations.
Min has previous experience in charitable fundraising, building long-standing partnerships with a number of grant-making organisations to fund community and campaigning projects at local branches of Mind: the Mental Health Charity.
Dr Eleanor Kennedy
Freelance Interim Research & Grants Manager

Beth Valentine
Challenge Events and Community Fundraising Manager

Beth is Challenge Events and Community Fundraising Manager at Bowel Research UK. She is responsible for all income raised from supporters taking part in iconic challenge events including the London Marathon, Royal Parks Half Marathon and London to Paris Cycle, as well as activities such as cake sales.
Beth has over 10 years experience across challenge events and community fundraising, having developed and managed fundraising activities and supported fundraisers at a diverse range of charities including Bowel Cancer UK, her local hospice and the National Autistic Society.
Henry Walter
Supporter Services Manager

Henry is the Supporter Services Manager at Bowel Research UK. He oversees the processing of donation income in line with charity regulations, whilst delivering a high-end supporter experience for our donors. Alongside these primary duties, he also manages database administration and assists with direct marketing.
Henry has over ten years of experience in the charity fundraising sector, having previously worked with the British Red Cross in their Supporter Services Team.
Sam Alexandra Rose
Digital Communications & Patient Involvement Manager

Sam Alexandra Rose is the Digital Communications & Patient Involvement Manager for Bowel Research UK.
Sam is a four-time cancer survivor with constitutional mismatch repair deficiency (CMMRD), a rare genetic condition related to Lynch syndrome that increases cancer risk. She is currently undertaking her PhD, exploring her cancer experiences through creative writing. She therefore brings her patient perspective, academic practice, and over ten years of digital marketing experience to her role. Read more about her bowel cancer experience in her Getting To Know interview.
Helen Pope
Communications Consultant

Helen is a healthcare communications consultant with more than 25 years’ experience across charities, professional associations, patient organisations and healthcare companies.
She runs the Press Office and supports the charity on all aspects of communications, providing strategic insight, guidance and hands-on support for Bowel Research UK.
Her experience includes running patient advocacy initiatives, disease awareness campaigns, healthcare professional engagement, media relations and wider corporate communications.