Simon Underdown

Mr Underdown joined PHSG in September 2019 from Churston Ferrers Grammar School.  He has been a senior leader since 2008 and a teacher for over 25 years having served in six different schools.  Mr Underdown is determined to ensure that our students have an enjoyable and fulfilling experience at school.

Donna Roughton

Miss Roughton joined PHSG in 2008 from Lipson Community College. Before being promoted to the senior leadership team, Miss Roughton was an extremely successful Head of Mathematics at both Lipson and Plymouth High. She has been a teacher for over 20 years. As Deputy Headteacher, she is responsible for the curriculum and academic standards, and makes sure that our systems run smoothly and efficiently.

David Britz-Colwill

Mr Britz-Colwill, a teacher of over 20 years, first joined PHSG in 2005 as a trainee Biology teacher before moving on to lead the Biology Department at Carisbrooke High School on the Isle of Wight. He returned in 2008 becoming our Deputy Head of Science before taking up a science leadership role at the prestigious Woodhouse College in North London in 2013. Mr Britz-Colwill returned once more in 2018 as our Head of Science, before becoming Assistant Headteacher with responsibility for Teaching and Learning, teacher professional development, the Early Career Framework, and Initial Teacher Training.

Alan Jenkins

Mr Jenkins joined PHSG from Devonport High School for Boys in September 2021.  He is an experienced leader with over 20 years of teaching experience.  Mr Jenkins is responsible for making sure that the quality of teaching and learning in the Sixth Form is of the highest standard.  He oversees all post-Sixth Form learning applications, including those for Oxbridge and all medical-related courses.

Samantha Payne

Mrs Payne joined PHSG in 1991 from The University of Exeter.  She has been a teacher for over 28 years and in that time has held a wide variety of teaching and leadership positions. Mrs Payne is responsible for ensuring that our students with additional needs receive appropriate support and guidance.  Mrs Payne is also our Designated Safeguarding Lead and manages the support base.

Shellie Joynes

Miss Joynes has been teaching at PHSG for 15 years, having joined in 2010 as a newly qualified Chemistry teacher.  She has held various roles of responsibility throughout her career including Online Safety Lead, Head of Chemistry and Interim Head of Science before becoming Head of Year 7 and Transition Lead in 2018.  Starting her new position as Associate Assistant Headteacher alongside her pastoral leadership role, Miss Joynes will be responsible for the development and implementation of the school's inclusion strategy.