About Us

For 25 years we have been building a strong reputation for delivering design led sustainable projects using strong technical knowledge and effective management.

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We promote collaboration with our clients and consultants to ensure appropriate designs which consider aesthetics, function/ operation, social impact, environment, context and inclusivity. Our aim is achieving quality designs delivered to meet budget and programme.

Many of our projects are repeat commissions from clients who recognise our sector specific knowledge, commitment and continued desire to improve. We service framework appointments for clients and contractors as well as completing individual commissions for corporate and private clients.

We have a strong portfolio in the Transport, Healthcare, Residential, Commercial and Community sectors with our particular experience allowing us to offer BIM, Accessibility, Visualisation, Interior Design and Conservation Services in addition to our Architectural and Principal Designer Services.

Our Office

IDP was established in 1994 and has been run by the current Partners:

Allan Valliday, Gerry Bradley and Harriet Loud, since 2015.



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The Partners each have more than 20 years experience with the Practice and continue to have direct involvement in every project. We are delighted to have the support of an enthusiastic staff, some who have developed their careers within IDP and others who have joined us in the last 5 years.

Our strong commitment to sustainability, the environment and social values is demonstrated in our Health & Safety, Quality and Environmental Management Systems, supported by specific policies in relation to Equality and Diversity, Corporate Social Responsibility Policy and Ethical Practice. IDP comply with and are audited to ISO 9001 and 14001 standards.