Leadership team

Interim Head
Mrs Gill Kelly

BA (Hons) (Simon de Montford University)

Mrs Kelly joined Sexey’s in 2017 and has a wealth of successful leadership experience including multiple senior roles across the UK, most recently as Interim Executive Principal at the Wellspring Academies Trust in Lincolnshire, where she led the centre from its previous Ofsted rating of Special Measures towards becoming Outstanding at its latest HMI monitoring visit.

She is Former Principal at City Academy in Bristol, a role that she occupied for four years. She is also currently a leadership coach for Women in Leadership and a member of the Board of Trustees for the CoED Foundation.

Mrs Kelly is author of Where will I do my Pineapples?, a book about building a whole new school based on her experience.


Deputy Head
Mr Daniel Bull

BSc (Aberystwyth)

Mr Dan Bull was appointed Deputy Head – Teaching & Learning from April 2016, having previously been Associate Headteacher and Head of the Humanities Faculty at Sexey’s.

He ran the Army Cadet Force (ACF) and was part of the boarding staff community at Cliff House since he joined Sexey’s in 2001.


Assistant Head - Director of Studies
Mr Brian Stubbs

BA (Sheffield), MPhil (Bath), PGCE (Cambridge)
ICT, Photography, Classics

As the longest serving member of staff at Sexey’s, Mr Stubbs has been active in most aspects of school life. He has taught Latin, Ancient History, and continues to teach ICT and Photography. His sporting endeavours are numerous: in the past he has taught Rugby and Athletics (making the most of his years in the university Rugby and Athletics teams, where he was also an English Schools’ finalist in both sports), and even Ballroom dancing (in which he got a Half Blue and was an National University Finalist). Today, he oversees the Badminton Club in school and is a former Chairman of the Somerset Schools’ Badminton.

Mr Stubbs spent many years as Housemaster at Coombe House and is a proud Yorkshireman and keen photographer.


Assistant Head - Director of Sixth Form
Mrs Linda Nixon

BSc (Cardiff), PGDip Business Management (Bristol)
Head of Sociology, Business Studies

Mrs Nixon joined Sexey’s in 1987, steering the Sixth Form with passion and a clear professionalism. In 2016, Ofsted inspectors praised the Sixth Form for being “very well led”.

In her (limited) spare time, Mrs Nixon enjoys travel, plays tennis and is a keen walker.



Assistant Head - Pastoral
Mr Philip Clackson

BSc (OU)
Mathematics & Designated Safeguarding Lead

Mr Clackson joined Sexey’s in 2002 as Head of Mathematics. He also served as Housemaster of Walwin from 2003-2008 and was a Staff Governor from 2008 – 16.

Mr Clackson became Assistant Head – Pastoral in 2016 and is the lead for all aspects of the School’s Safeguarding. He is also father to four children who have all attended (or continue to attend) Sexey’s, making him well placed to understand the challenges and expectations of both secondary school students and their parents!


Business Manager
Mrs Helen Rogerson


Mrs Rogerson joined Sexey’s in 2008 and has steered the business side of the School with a firm hand ever since. A proud Northerner, she has a wicked sense of fun and is a keen walker, traveller and cook.



Head of Boarding
Mr Matt Kiely

BSc (Loughborough), BSA Diploma
Geography, Physical Education

Mr Kiely joins Sexey’s in 2018 having previously held roles as Head of Boarding at Walden School in Essex and Alexanders College in Suffolk, where he led boarding through a successful renaissance and inspection.

A graduate of both Loughborough and Durham Universities, Mr Kiely has also taught in South Africa and played representative rugby and basketball. He’s a keen Science Fiction reader and sports enthusiast.