Skip to content ↓
Langley Grammar School

Langley Grammar School

Senior Leadership Team

The Senior Leadership Team (SLT) is responsible to the Governing Body for the leadership and management of the school.  Each member of the team has specific responsibilities as described in the brief descriptions below, and also line manages a group of academic subject departments or other staff teams.

To contact a member of the SLT please call the school Reception on 01753 598300 or send an email marked for their attention to


John Constable, BSc - Headteacher

An engineer and Physics teacher by background, Mr Constable held a number of roles in schools in Hertfordshire and Buckinghamshire before becoming Headteacher in January 2010.  He is a serving Ofsted Inspector and also plays an active role in supporting the community of schools in Slough and the surrounding area.


Image result for silhouette clipartDavid Harding, BA - Deputy Headteacher

Mr Harding joined the school in May 2015 from his previous role as Assistant Headteacher in a school in Surrey. He is a geography teacher by background and his current responsibilities include teaching and learning, staff professional development, staffing, curriculum, careers provision and pastoral oversight of Years 10 and 11.


Ashley Johnson, LLB - Deputy Headteacher 

Mr Johnson joined the school in September 2021 from his previous post as Assistant Headteacher in another local school. He is a PE and drama teacher by background, and knows the local area well. His main responsibilities include Admissions to Year 7, including the 11+ examination process, pastoral oversight of Years 7-9 and student personal development.   


Nicola Dobbs, BA - Assistant HeadteacherImage result for silhouette clipart

Before joining the school in September 2019, Mrs Dobbs worked as Head of English at a school in Maidenhead. Her main responsibility is as Designated Safeguarding Lead but in addition she oversees our provision for disadvantaged students, those with special educational needs and/or disabilities (SEND), and those who are identified as more able cohorts.


Daniel Mace, MSc - Assistant HeadteacherImage result for silhouette clipart

Mr Mace has taught Geography and PCS at LGS since 2006 having completed his PGCE in the North East of England. He has been a Subject Leader and Lead Practitioner and his responsibilities now include the school's use of technology for learning, and our roles as an Apple Distinguished School and Regional Training centre. 


Helena Makowski - Director of Sixth Form

Ms Makowski has spent a significant proportion of her career at Langley Grammar School in a variety of roles, having originally joined as a teacher of Home Economics. She continues to teach Food Technology in the lower year groups, and GCSE Food and Nutrition in Years 10 and 11.  She has led our very successful Sixth Form since 2013, and is ably supported by a team including two deputies, administrative support and a large team of form tutors. 


Gary Botha - School Business Manager

Mr Botha joined the school as Business Manager in September 2021.  He is responsible for the financial management and other key support functions of the school and provides overall leadership to the support and administrative staff. His background is as an experienced school leader in South Africa before moving to the UK in 2020.