34 Years of Design Rationale

In June, we proudly celebrated 34 years of Design Rationale Ltd marking over three decades of innovation, precision, and excellence.

Founded 1992 Design Rationale Ltd has grown into a trusted specialist in architectural metalwork and glazing, delivering exceptional projects across the UK’s major transport hubs and some of the country’s most recognised infrastructure.

June also marks the anniversary of Lesley Heap and Robin Heap beginning their journey within the company, their leadership  helping shape the values, expertise, and commitment that continue to define Design Rationale today.

For 34 years, Design Rationale Ltd has specialised in security-rated architectural metalwork and glazing, delivering solutions that combine safety, strength, precision, and architectural excellence.

As we celebrate this milestone, we thank our clients, partners, and team members who have been part of our journey. Here’s to 34 years of success and to many more years ahead.