Group Managing Principal

Mr M Hagger B.A. (Jnt Hons), M.Ed., PGCE


As Group Managing Principal, Matthew Hagger performs many roles. Overseeing all operational, financial, regulatory and staffing matters on a daily basis, he meets regularly with parents of children at all four schools both formally and informally. Following the family tradition that began in 1982 when the Hagger family acquired Oaklands School, he is a qualified…

Group Education Principal

Mrs C Osborn B.A.(Hons), M.Sc., PGCE


Claire Osborn has been Headmistress of Normanhurst School in 2010, having started with us in 2003 as Head of English and Assistant Head. In addition, Claire spent 3 years as Braeside Headmistress from 2016 and is now one of the Group Principals specifically tasked with overseeing the teaching and learning…

Financial Controller

Mrs K Burton


As Group Financial Controller, Kelsey works with the Accounts Department to prepare the Group’s management accounts and the monthly management, budgeting and forecasting information. Kelsey also helps the Accounts Department with the administration of the fees invoices, credit control and supplier invoices.

Group Marketing Assistant

Miss R Picking


Rhianna forms part of the Marketing Team, and can often be seen around the schools taking photographs and gathering news. Rhianna has responsibility of keeping the website and school social media channels up to date, keeping in touch with feeder schools and nurseries and a number of other marketing tasks.

Group Personnel Manager and PA to the Group Executive Team

Miss E Curtis


Emma Curtis works at Head Office as the Personnel Administrator and Personal Assistant to the Group Management Team. Emma takes charge of all initial employment checks following the recruitment of new staff.

Lead Group Receptionist & PA to the Group Education Principal

Ms D Davis


Diana is the Group Receptionist and is the first port of call for telephone queries and for welcoming visitors to Head Office.  Diana also takes card payments from parents and carries out a variety of roles to allow for the smooth running of the schools.

| Assistant Group Maintenance Officer

Mr M East

Mr M East

Group Driver

Mr S Elbaz

Mr S Elbaz

Mr Elbaz drives the school minibuses and vehicles which includes transporting pupils and staff on educational visits or sporting fixtures and other similar activities.

Group Accounts Manager

Miss H Grace


Hollie is based at Head Office and is part of the Finance Department that looks after the processing of fees and purchase invoices for all four schools. She is available by phone or email to assist with any invoice queries parents or suppliers may have.

Group Maintenance Manager

Mr G Griffiths


Guy joined the Oak-Tree Group as Group Maintenance Manager in August 2018. He oversees all maintenance at each school across the Group, including a team of around 20 Caretakers, Gardeners, Groundsmen, Maintenance Officers and Porters.