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Tel: +44 (0) 7815 953824
16 Borrer Drive, Henfield, West Sussex, BN5 9FQ


We have worked with Jonathan Sethna Interiors on numerous projects and we are very happy to recommend them. Jonathan has a bold and recognisable style and the coordination of the design and attention to detail has proved very successful with our clients.


Jonathan's designs have helped us transform average and dull looking buildings into truly exceptional places to live.  The designs include interesting finishes, materials and textures and the residents have always been thrilled with the transformation that has occurred.




Jonathan has been creating beautiful interiors for the past 18 years, and he prides himself with his  friendly, approachable attitude and meticulous attention to detail which is never compromised.


He has drawn from a wealth of experience working for many industry greats such as Kuan Chew, Mary Fox Linton, Martin Hulbert and Hill House Interiors.  Working mainly within the High End Residential, Commercial and Hospitality sectors, Jonathan has worked on many iconic projects that are recognised the world over for their style and timeless elegance.


He is fuelled with creative enthusiasm and a desire to assist individuals and companies achieve their objectives.  Collaborating closely with his clients Jonathan strives to create simply stunning interiors.


Whether you are a private individual, existing business or new start up business looking for an interior transformation, then we can help you get from where you are to where you want to be.




Jonathan offers a complete range of Interior Design services, including architectural and decorative from early conceptual stage through to completion.

Understanding Your Project Requirements

Forming an understanding relationship with our clients is vital to us. We begin by taking a detailed brief of your requirements via a face to face meeting, in order to discuss your personal tastes and preferences. We can then advise you on design styles, approximate budgets and realistic timescales whilst attaining a better understanding of your project settings and expectations. A full survey is then undertaken if required, and at this time we would discuss potential features to retain, or existing walls to be removed or adjusted for example. Our aim ultimately is to assist you to visualise and explore the potential of your project, through discussion and imagery. We then re-lay all this carefully in the form of a written brief, outlining the objectives and milestones of your project for your approval.


Design Process

In response to your brief, we then create a concept design that invokes an initial feel for your interior as the basis for further discussion. We present our ideas to you through mood boards, drawings and visuals, working closely with you to ensure the designs are developed to your liking.

Once the overall concepts have been set, we prepare a detailed design presentation. Depending on the nature of the project this might include floor plans, electrical layouts, lighting layouts, wall elevations, furniture and finishes schedules, joinery details and sample boards showing fabrics for soft furnishings, window treatments, floor and wall coverings and proposed furniture and accessories. A full specification document can also be provided, breaking down the costs, item by item.

Project Co-ordination

When you are happy with the designs we have produced, we can manage the rest of the project through to completion. We can provide skilled tradesmen with all the information they need to implement site works, and we oversee this to ensure everything runs smoothly and to a high standard. Furniture orders and deliveries are scheduled so that they arrive at the right time, and we look after as much or as little of the project as you need, down to the final finishing touches.


Consultancy Service

If you prefer, we can simply provide a consultancy service, charged at an hourly rate. We also offer a design-only service, which might be beneficial to you if you want to refurbish or furnish a property piecemeal yourself.

CAD Drawings & Computer Generated Images

If you are looking to submit Planning Applications and require spatial layout drawings, or are simply looking for initial furniture layouts then we can provide computer aided design drawings to suit all of your needs.  

In addition we work closely with highly skilled 3d visualisers, who can create a like for like scaled representation of the proposed Interior Design, right down to the finishes and lighting.

In short, we can offer as little or as much as you require, but whichever option you choose we guarantee a professional service of the highest quality.