About Casey & Fox
Colourful, Characterful Interiors That Tell Your Story, Not Mine
For busy families and professionals who love colour, art and a bit of quirk.
Siobhan Casey
South London Interior Designer
I’m Siobhan Casey, founder of Casey & Fox, an interior design studio based in Sanderstead, South London. For over 13 years I’ve been helping clients create homes that feel as good as they look – bold, colourful and deeply personal, never staged.
Before founding Casey & Fox, I cut my teeth at leading international architecture firm Kohn Pedersen Fox (KPF), where I worked as Project Administrator on the delivery of the new Abu Dhabi International Airport. It was a masterclass in coordination, detail, and leadership on a global scale — skills I now apply to every residential project I take on. Early in my career I had the privilege of interning with a number of high-end boutique design studios, where I worked on projects as varied as a Viennese hotel, a Caribbean holiday home and a luxury apartment at London’s prestigious One Hyde Park.
My formal training came at KLC School of Design, where I graduated with a diploma in 2010 and received the KLC Personal Achievement Award. Since then, my work has been featured in Living etc, The Telegraph, KBB Magazine and Country Homes & Interiors. Clients often tell me they expected chaos, but instead found clarity, calm and — to their surprise — even a little fun.
Day to day you’ll either find me on site with my trusty tape measure, at Chelsea Harbour sourcing fabrics, or back in the studio refining the small details that pull a whole scheme together. I speak fluent “client”, “architect” and “builder”, and pride myself on keeping everyone aligned and projects moving smoothly.
Colour is my language. I love mixing antiques with contemporary pieces, curating artwork — particularly Aboriginal art — and balancing beauty with practicality so that every room earns its keep. I will nudge you to be braver with colour than you thought possible. Trust me, you’ll thank me later.
Away from work, I foster cats and kittens for a local animal charity, which keeps life both grounded and joyfully unpredictable.
The Studio
Casey & Fox is a full-service interior design studio creating characterful homes across South London and Surrey. Based in Sanderstead, we work with busy homeowners who want more than a house that simply looks finished. They want a home with warmth, personality and practical ease. We are known for layered interiors that combine colour, art, antiques and thoughtful detail, always shaped around real life.
We work on projects ranging from single-room transformations to full home refurbishments. Our Bespoke Interiors services include space planning, kitchen and bathroom design, bespoke joinery, lighting design, furniture sourcing, art curation and complete project coordination.
From the first conversation to final styling, our process is clear, collaborative and well organised. We listen carefully, develop ideas with purpose, coordinate the right people, and guide decisions so the end result feels personal, practical and beautifully resolved.
We value longevity over churn, responsible sourcing over shortcuts, and craftsmanship over throwaway choices. Alongside our full design service, we also offer online consultations for homeowners who want expert help with a specific room, decision or design dilemma.
A Snippet of Our Projects
The People Behind The Projects
I lead the design on every project. Around me is a close group of trusted collaborators: architects, structural engineers, builders, lighting and audio-visual specialists, landscape designers, and skilled craftspeople. We work as one team, translating vision into detail with calm authority.
Our clients value our meticulous planning, a transparent process and the steady sense of calm we bring when the dust starts flying. Whether we are rescuing a design mid-build or steering a complex renovation from start to finish, we bring clarity, warmth and a little wit.
You get one point of contact and a coordinated team. From bespoke joinery and kitchens to bathrooms, decorating and artwork installation, every element is handled with care and quality. To you it feels seamless. Behind the scenes it is a well-run team effort.
Already have an architect or builder you like? We are happy to work with them, provided they meet professional standards.
What Makes Us Different
You get one point of contact and a coordinated team. From bespoke joinery and kitchens to bathrooms, decorating and artwork installation, every element is handled with care and quality. To you it feels seamless. Behind the scenes it is a well-run team effort. Already have an architect or builder you like? We are happy to work with them, provided they meet professional standards.
– No Beige Regret: Homes that are layered, expressive and personal.
– Art at the Heart: Curated pieces shape the palette and mood.
– Calm in the Chaos: Clear plans, steady guidance and reassurance throughout.
– Tailored, Not Templated: Every design starts with you and how you want to live.
– Built to Last: Sustainable choices, responsible sourcing and craftspeople we trust.
The result is a home that feels authentic, timeless, and entirely yours.
Ready to talk about your home?
If you want a designer who listens, brings ideas and helps you avoid expensive mistakes, let’s chat.
What Our Clients Say
Did You Know?
Artwork is a particular passion of mine. I treat art as a design driver. Colour palettes, proportions, textures and lighting often flow from a single piece.
When a client already owns a piece, we often begin there. When they do not, I help them discover work they genuinely connect with. We plan sightlines, scale walls correctly, choose conservation-friendly framing, and light works at the right colour temperature so they sing without glare.
I source through reputable galleries and dealers, respect cultural protocols, and ensure proper provenance and artist attribution. I am not an art dealer. I help you choose and live with art you love, alongside contemporary works, photography and sculpture when they suit the space.
For my own taste, I have a deep-seated love of Australian Aboriginal art. Its storytelling, bold colour and rhythmic line and dot work carry a powerful sense of place. A single piece can transform the feel of a room.
Want to see what is inspiring me right now? Visit the blog for recent posts on past and current exhibitions
I will be launching an Art and Colour online consultation later in 2026. If you want to be notified about when that launches, as well as receive 10% off your first consultation, then please email me directly and I’ll add you to the list.
“You want to come home and feel joy”
-Siobhan Casey
