Marianne Mehdizadeh, architect/ co-founder

 Marianne is a UK registered architect with over 10 years of experience delivering projects across the United Kingdom, Europe and the United States. Born and raised in London, she trained in Oxford and London, graduating with a BA, MArch and Diploma in Architecture, and is registered with the Architects Registration Board.

As co-founder of Thema Architects, established in 2021, Marianne directs the interior vision of the practice, creating spaces that feel purposeful, personal and carefully crafted.

Her design process is rooted in a deep understanding of clients, their needs and the realities of how they live and work. Known for a rigorous and detail driven approach, Marianne guides projects from concept through to completion with clarity and care. Every decision is considered to ensure a cohesive and expressive outcome, supported by a genuine commitment to long term client relationships.

Influenced by her French and Persian heritage and a lifelong curiosity about culture, Marianne designs with a sensitive and contextually aware approach. She embraces constraints as opportunities for inventive solutions, allowing each project to develop its own distinct language. With a human centered mindset and a strong eye for detail, her work balances creativity with precision, resulting in bespoke spaces that are refined, functional and enduring.

Harry was born and raised in Thessaloniki, Greece, where he studied Architecture before moving to London to work across residential and commercial projects. After leading multiple projects as a project architect in London, alongside developing personal work in Greece, he decided it was the right time to establish his own practice.

Harry’s strengths lie in space planning, detailed design, a holistic understanding of projects, and strong technical knowledge. Growing up in Greece shaped his belief that light -or the absence of it- has a powerful impact on mood and wellbeing. 

His work focuses on opening spaces to their surroundings and maximising natural light wherever possible. When this isn’t achievable, a carefully considered lighting strategy becomes central to the design.

As co-founder of Thema Architects, established with Marianne in 2021, Harry leads the studio in delivering high-quality, thoughtful design. Through careful detailing and the selection of refined materials and finishes, he aims to create spaces that enhance everyday life. He believes every project benefits from being continually questioned, refined, and viewed from different perspectives - only then can a proposal truly feel resolved.

Stella is a registered architect in Greece and the UK, with years of experience in designing and delivering projects across a wide range of scales and scopes, including architecture, interior design, and urban design. Her previous experience includes working for an AJ100 architectural practice in London, where she delivered complex large-scale residential and mixed-use projects. She joined Thema Architects in 2023.

She graduated with a Master of Architecture from Democritus University of Thrace in Greece. Additionally, she obtained a Masters in Urban Design and completed her Part 3 studies, both at the Bartlett School of Architecture, UCL.

Stella is passionate about architecture and enjoys working collaboratively on the delivery of projects that are bespoke and tailored to individual clients.

Mehmet has extensive experience working on a wide range of public realm projects, including workplace, cultural, residential, and commercial buildings, spanning both large and small-scale developments. He previously worked at HTA Design before joining Thema Architects in 2024.

At Thema Architects, Mehmet contributes to a variety of residential and commercial projects, with a primary focus on developing the design of ongoing projects and assisting in their management on-site. He ensures that the project vision is executed seamlessly throughout the construction process.

Mehmet holds a Bachelor of Architecture degree from the Faculty of Architecture at Eastern Mediterranean University in Cyprus. He is passionate about public architecture and interior design, with a strong ambition to embrace people-centered design in all his work.