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The Interior Design Institute

The Interior Design Institute offers you the most advanced and comprehensive online solution to learning available today.


The Interior Design Institute offers the most in-depth online Diploma course that you will find anywhere on the internet, covering all aspects of Interior Design.

The Interior Design Diploma Course is delivered online, consisting of 12 comprehensive modules and 12 corresponding interactive assignments. The normal time required to complete the course is 24 weeks, however you can take up to 12 months to finish, if required.

The course is self-paced so there is no pressure to meet deadlines. IDI has designed the course to fit around your lifestyle, not the other way around. Since the course is online you can access your course account no matter where you are in the world - as long as you have access to the internet.

There are exercises at the end of each module that will give you the hands on experience needed to tackle Interior Design projects and to become confident and find your creative voice. These will also form part of your professional portfolio to show potential clients.

Your tutor will guide you closely through each step of the course, offering personalised and specific constructive criticism on your submitted work. If you ever have any questions in relation to your course or assignments, all you need to do is send your tutor a quick message via our website and they will reply with an answer as soon as they can.

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Interior Design Institute

90 Long Acre

Covent Garden


Greater London



Nearest station

milesCharing Cross

( 0.2 miles)

Covent Garden

( 0.1 miles)

Diploma in Interior Design

The Diploma in Interior Design is the perfect pathway for individuals who wish to make a career as interior designers. There is a growing demand for qualified interior designers who can add a touch of beauty to houses and offices and make them special.

The course is structured into 12 modules:

  • The Visual Language of Design
  • The History of Style, Decoration and Architecture
  • Styles of Design
  • Scale - Space Planning and Proportion
  • Light and Lighting
  • Colour
  • Interior Finishes
  • Fabrics, Window Treatments and Home Textiles
  • Furniture and Accessories
  • Your Client
  • Communicating Accurately
  • Setting up your Business

Prospective students can read in detail about the course modules.

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Studying Online

Online education is quickly becoming a preferred method of study for people all around the world. Our commitment to providing a quality training program has resulted in unique teaching and student support systems that produce unparalleled results.

IDI is the only education provider in the world to offer the Interior Design course solely online and we offer 24 hour student support, 7 days a week, every day of the year.

There is also an exclusive Facebook group that provides a great opportunity for you to meet fellow students from all over the world, ask questions, share knowledge and experience, upload work, give and receive feedback, make new friends and talk everything about Interior Design!

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The easiest way to join the IDI Diploma in Interior Design course is to apply online.

The standard course fees are £749. If you pay your course fees in full you receive a £50 discount and only pay £699 for the complete course. You can also opt for weekly or monthly payment plans. To pay weekly you only pay £31.21 x 24 weeks or monthly £124.83 x 6 months.

IDI also has a "7 Day Money Back Guarantee Policy". When you enroll, you have access to the first two modules and assignments. After you have gone through the first two modules you believe the course is not suitable, just let them know within 7 days from the date you enrolled, for a full 100% refund, no matter if you paid weekly, monthly or in full.

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Leta Keens

Leta Keens is an award-winning journalist who specializes in architecture, design and the arts. She started her career on the interior design and architecture pages of a Fleet Street newspaper and has since worked in Australia, Italy and in the United Kingdom. Leta has written for a number of publications, including Harper's Bazaar, House & Garden, Elle Decoration and for a number of years has been editor-at-large of Belle, the internationally acclaimed architecture and design magazine.

Wendi Snyder

Wendi Snyder started a career in theatre specializing in Costume and Set Design for student and professional productions at the Alexander Theatre Monash University. She stayed there for 10 years before working with theatre producers such as Michael Edgley, Kevin Jacobson and Cameron Macintosh. Her 25 year career in theatre took her around the world where she educated herself in Architecture and Interior Design.

Talin Leask

Talin's Interior Design career started upon graduation from the Academy of Design in Montreal, Canada. She travelled to Dubai where she worked with large architectural and design practices, working on large hotels, residential projects and retail outlets in newly built shopping malls across the city. Having moved to London she was able to work for Green line Interiors which specialized in Yacht interiors as well as large scale royal residents based in the Middle East.

Read in detail about the tutors.

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Student Speak

Here's what some students have to say about their experience of studying at IDI.

Paul O'Hare

"Following a 25 year involvement in the decorating industry I decided to concentrate more on a qualification in Interior Design, I looked around for the best solution that would fit in with my busy professional life. I found that the course was not only professionally run but was also structurally sound, the flexibility it gave me to continue working made it perfect for me to achieve my goal.

Since graduation I have completed numerous commercial and domestic projects and now run my own practice which employs 3 designers and 4 technicians and I have also been appointed Interior Designer for Dulux Design Service! I would encourage anyone with limited time but with lots of enthusiasm to undertake this course and I wish you well in the future..."

Rochelle Hodgson

"Whilst I was studying at college, I realised that I wanted to focus on interior design. When entering a home for the first time, I immediately looked and evaluated the décor. That's when I knew that I had to get a diploma in interior design. As I was still studying, I needed an online course that was professional, flexible and affordable and that's when I found The Interior Design Institute. Support from the family hasn't always been there as they don't believe that 'art' can get you anywhere in life. However, I set out to prove them wrong and immediately enrolled in the course. It was difficult at times to balance college work with the course but knowing that I was going to be able to do something I loved kept me going.

The diversity of the course has widened my knowledge to the interiors around the world. I hope to one day visit many places of the world to get invaluable inspiration in order to design unique homes. I also found that the support from tutors was always there and they would help me whenever I needed it. Since graduation, I have started an Interior Design business in Jersey called 'Divine Dezigns' focusing on commercial and residential design. We offer our services worldwide, we create sample boards and design schemes that can be posted directly to their door. I encourage anyone looking for an Interior Design Course to enrol now at The Interior Design Institute. Trust me, it's invaluable..."

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Contact details

The Interior Design Institute - The United Kingdom

90, Long Acre

Covent Garden

London WC2E 9RZ

Great Britain


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