Studio Effra is led by Directors Billie Miller and Fin Johnson, who combine wide-ranging industry experience to think creatively and design with intent.

Billie brings a background in senior interior design leading large-scale corporate and workplace projects, shaping award-winning, concept-led environments for global clients.

Fin brings a grounding in international architecture and high-profile creative production, from major cultural landmarks to bespoke, high-impact installations.

Together, they combine rigour with imagination, ensuring every project feels considered, distinctive, and truly bespoke to the client’s needs.

With completed work across the UK, Europe, Asia and Africa, we bring an eclectic approach and breadth of knowledge to every project. Our experience spans diverse sectors, cultures, and scales, giving us the versatility to respond to any brief with fresh thinking and proven expertise.

No two clients are the same, and neither are our designs. We take the time to understand who you are, translating your identity, ambition and evolution into a space that feels distinctly and authentically yours.