Meet the Team

David Cresswell

Headmaster

Growing up around the world as the son of a Foreign Office diplomat, I developed a deep appreciation for different cultures and a love of languages, shaped by classrooms full of diverse nationalities.

I returned to the UK for boarding school, arriving as a keen sportsman and leaving as a Drama Scholar. I read Modern Languages at Oxford University, where I captained the Men’s Hockey team in the Varsity Match (despite defeat to Cambridge!). I began teaching at Cranleigh School, later becoming Head of German and a Deputy Housemaster at Radley College, where I also coached the 1st XI hockey and led the tennis programme.

After a spell as Head of Sixth Form at Barnard Castle School, I became Senior Deputy Headmaster at Whitgift School in London before returning to Barney as Headmaster. My wife is a local GP, and our children are proud members of the Prep School. Inspired by my own teachers, I believe in weaving ambition, positivity and a growth mindset into school life.

Martin Pepper

Second Master (Senior Deputy Head)

The Second Master is the Headmaster’s right hand, helping to steer the day-to-day life and future direction of Barnard Castle School.

With oversight of daily operations, behaviour, co-curricular life, and strategic projects, the Second Master ensures the school runs smoothly and stays true to its values.

From managing the school calendar to supporting staff and championing the student experience, this role brings together leadership, coordination, and care for every part of the school community.

Sarah Leonard

Headmistress of the Prep School

Niall O’Connor

Deputy Head (Academic)

The Deputy Head Academic leads the charge on learning and academic ambition at Barnard Castle School.

From shaping the curriculum and driving teaching excellence to championing digital strategy and professional development, this role is all about helping pupils and staff be their very best. Working closely with the Headmaster and Senior Management Team, the Deputy Head Academic supports the school’s commitment to aspiration, rigour, and continuous improvement.

Whether it’s enhancing classroom practice or unlocking student potential, their work ensures that academic life at Barney is full of opportunity and high standards.

Caroline Riley

Deputy Head (Pastoral)

The Deputy Head Pastoral is at the heart of Barnard Castle School’s caring culture, leading the pastoral strategy and ensuring every pupil feels safe, supported, and able to flourish.

As the Designated Safeguarding Lead and a member of the Senior Management Team, they oversee wellbeing, behaviour, and inclusion, working closely with staff, pupils, and parents to create a warm and respectful community.

From championing mental health to leading safeguarding practice, the Deputy Head Pastoral helps make Barney a place where young people thrive both in and beyond the classroom.

Suzanne Metcalf

Bursar

The Bursar plays a vital role in the day-to-day running and long-term success of Barnard Castle School. Overseeing everything from finance and estates to HR, compliance, and operational strategy, the Bursar ensures that the school runs smoothly and sustainably behind the scenes.

As a key member of the Senior Management Team, they support the Headmaster and Governors with sound advice and planning, helping the whole community thrive. Whether it is managing budgets, developing the estate, or championing new initiatives, the Bursar keeps the heart of the school beating quietly and effectively.