Interior & Outerior

MJCT Architects and Arcadia Landscape Design have merged to create a unique practice focused on delivering exceptional architecture and landscapes. Our new joint practice will be known as, I&O – Interior Outerior.

A landscape and architecture focused practice designed around your needs as a client, offering a single-point comprehensive service package delivered by a creative and experienced team of partner-level professionals.

Why are we different?

The design and construction of beautiful architecture and landscape projects is becoming increasingly complex, and the creation of a project is no-longer under the control of a single professional consultant.

This brings complications to all clients looking to build their own project, who then have to seek out and appoint consultants that are unknown and untested to them.

Our solution

I&O recognise that this is a problem and offer our clients a bespoke solution. 

A single point of contact for you to use our established design team, which share the experience, knowledge and capacity to cope with your project and its particular set of complexities.

Our aim is to deliver stunning architecture and landscapes, carried out with the minimum amount of stress. and centred on our belief that communication between a client and the design team is critical for the smooth delivery of your project.

We are constantly working to develop our practice with a client focused business approach delivered by our client team which uniquely includes your own personal Account Manager.

We are supported by a dedicated Business Development Advisor to continuously review, enhance and develop our client experience.


At I&O we all share an ambition to design beautiful, harmonious, sustainable architecture, gardens and landscapes.

Wherever we are commissioned in the world, so communication and accessibility is key.

How we do it

Each I&O project starts with an initial meeting with our Founding Partners, Jon Courtney-Thompson and Sue Hetherington. 

They both love to meet new clients, see and hear about the project you are planning, and to discuss your ideas as well as suggesting a few of their own!

They will explain the I&O approach to delivering your project and show how we propose working with you rather than just for you.

If we all feel that the I&O approach is a good fit, we will come away and establish the likely requirements for input from an I&O Founding Partner, and our wider Partner Network in their specific fields of expertise, and suggest a ‘Plan of Work’ to deliver your dream. Each I&O project will have a slightly different focus, but using our unique Partner Network we can expand the team and bring in the appropriate specialists, incorporate them into your network, and start working for you on your project.

The key element is that this wider network offers capacity to deliver larger projects and wider experience, but your point of contact remains the I&O Founding Partner or your I&O Personal Account Manager.

Our Team

Sue Hetherington

Jon Courtney-Thompson

Featured Projects

Things that happen…

Our latest Instagram posts from the life and likes of @iando_architecture  @iando_landscape.