JJ McCarthy Interior Design takes on only a select number of projects, ensuring each one receives her full creativity, expertise, and personal attention.

JJ McCarthy qualified at the KLC School of Design in 2003 and has worked in the industry for over 20 years. She trained with renowned designers Celia Hendry and Nicholas Herbert, gaining experience on large-scale classical interiors before founding her own London studio in 2010.

Today, JJ runs her practice from a studio near Sherborne in Dorset, supported by a small dedicated team. She works on projects of varying scales across the UK and beyond, always bringing her passion for creative design and attention to detail.

JJ specialises in interior decoration and bespoke furniture design. Her projects often blend carefully sourced antiques, artwork, decorative objects, and beautiful textiles. She collaborates with a trusted network of suppliers and craftspeople she has built relationships with over many years, ensuring every project is unique, authentic, and deeply personal.

Her goal is always the same: to create interiors that reflect her clients’ individual needs and tastes, while achieving a look that feels timeless, eclectic and as if it has evolved naturally over time.

Our Services

  • Large Bespoke Projects

    Our full design service covers every stage of a project, from the first consultation through to final installation. We begin with in-depth discussions and detailed space planning to ensure your vision and requirements are fully understood.

    Working alongside architects and builders, we oversee the design and construction process to achieve the highest standards. We collaborate with a trusted network of suppliers, artisans, and craftspeople to create exceptional finishes tailored to your home.

    Throughout, we provide clear communication, expert guidance, and meticulous attention to detail. Each design is entirely bespoke, reflecting your personality and the story you want your home to tell.

    This service includes:

    •         Interior Design & Decoration

    • Bespoke paint schemes

    •         Antique sourcing  

    •         Kitchen and Joinery design

    •         Scheduling

    • CAD design

    • Project management 

  • Small Scale Consultations

    Our consultation service is designed for clients who want expert guidance on a smaller project or a specific design challenge. These 1:1 sessions, held in person or virtually, give you direct access to JJ’s experience and creativity without the commitment of a full interior design service.

    It’s a collaborative approach — ideal if you’d like professional insight and direction, but also enjoy being hands-on with your own project. Consultations typically focus on decorative elements, working within your existing layout and structure, and do not usually involve architects.

    Each 90-minute consultation with JJ is £350 + VAT and includes:

    •  Paint Colours & Fabric Choices 

    •  Room Layouts & Schemes

    •  Lighting Options & Fittings

    •  Product and Supplier advice

    •  Antique sourcing 

    •  Individual room design

    •  Joinery design

    •  Budgets