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 team at Plymouth High, 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 returned to PHSG in 2008, having led the Biology Department at Carisbrooke High School on the Isle of Wight. Serving as our Deputy Head of Science, he left in 2013 to take up a science leadership role at Woodhouse College, a highly-successful sixth form college in North London before returning in 2018 as our Head of Science. An experienced teacher of more than 17 years, Mr Britz-Colwill was appointed in 2023 as Assistant Head Teacher responsible for Thinking Schools accreditation as well as teaching and learning. He also oversees teacher training, including early career teachers and Curriculum Enrichment Week.

Alan Jenkins

Mr Jenkins has 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.