We are delighted to announce that we have been presented with a Health & Safety Award by Mace Group in recognition of our contribution to the Heathrow Terminal 5 Transformation Project on the architectural glass and metalwork package, led by Project Manager Luke Carter, formally recognized in January 2026 for upholding exemplary standards of health, safety and wellbeing within a complex live airport environment. Working within an operational terminal demands careful planning,

Recently, we brought that same team spirit to an inspiring nationwide initiative in support of Macmillan Cancer Support. Our team committed to a 35-minute exercise session each day, improving wellbeing while supporting an incredible cause. For every employee who took part, Design Rationale Ltd made a charitable donation and those who raised the most funds won the monthly wellbeing challenge prize thus reinforcing our commitment not just to participation, but to meaningful imp

Design Rationale were responsible for the design, coordination, and installation of the high-level glazed balustrade and handrail systems at London Blackfriars Bridge, delivered in collaboration with a trusted manufacturing partners back in 2012. Our scope of works included: High-level glazed balustrade Handrail systems The glazed balustrades were designed to enhance safety while maintaining openness and transparency, complementing the station’s modern architecture. The handr

At DR sustainability isn’t just a goal – it’s part of how we work and grow. As part of our ongoing commitment to reducing our environmental impact, we’re proud to share that solar panels have now been installed at our head office. This investment marks an important step in lowering our carbon footprint by reducing reliance on non-renewable energy sources and cutting overall energy-related emissions. By generating clean, renewable electricity, we’re helping to create a more en

Design Rationale has completed the installation of  bespoke glass panels at the Kiosk 2 retail unit within Liverpool Street Station, London. The works included the replacement of a large, irregularly shaped structural glass panel forming part of the angled storefront, as well as a full-height entrance door panel. To minimise disruption within this busy transport hub, the installation was carried out over two overnight. Specialist vacuum-lifting equipment was used to safely re

We are  pleased to announce our appointment on the upcoming CIP Lounge at Heathrow Terminal 5, delivered in collaboration with Mace. Following a competitive process, Design Rationale has been awarded the glazing and metalwork package, recognising our expertise in delivering high-quality, technically complex architectural solutions within live aviation environments. The project has been designed by Chapman Taylor, whose vision sets a strong architectural benchmark for the new

When Londoners ride an escalator on the Underground or the Elizabeth Line, they’re now greeted by vivid digital panels that transform travel time into a moving visual experience. Behind this upgrade is Design Rationale , working with the Global & Transport for London (TfL) partnership to engineer and install the bespoke frames for these striking screens. Our team delivered installations across some of the busiest stations in the capital: Crossrail : Tottenham Court Road, Farr

At the end of 2025 , Design Rationale oversaw TN75 impact testing as part of the design development for a plant enclosure on a prestigious architectural project. The test was carried out to verify how the selected Rimex textured stainless-steel material would perform under both soft and hard body impacts-ensuring the enclosure meets the durability and safety standards expected for high-profile developments. The TN75 test is a widely recognised assessment used within the UK co

We are proud to announce and congratulate Glenn Dorrington, our Quality Control Manager, on achieving certification in Quality in Construction. This accomplishment highlights both Glenn’s dedication and our wider commitment to maintaining the highest standards across our projects. As a bespoke architectural glass and metalwork subcontractor, precision and consistency are essential. By investing in the ongoing development of our team members, we ensure quality is embedded from

Design Rationale is proud to share that our Terminal 5 project team has received a Health & Safety Award from Mace, recognising outstanding performance on the Heathrow Terminal 5 project. Working within a live airport environment demands absolute discipline, clear planning and a safety-first mindset. The T5 team has consistently demonstrated exceptional commitment to safe systems of work, proactive risk management and full compliance with site procedures. This recognition ref

We are pleased to share that Vidas Peciukonis has been recognised by Mace with a Health & Safety Award for his contribution to the Heathrow Terminal 5 Security Transformation Project. Working under the guidance of our Project Manager Luke Carter, Vidas has shown a consistent commitment to safe working practices and a conscientious approach on site. His attention to detail during installation ensures that the work carried out is not only high-quality, but also aligned with the

As part of our Wellbeing November activities, we kicked off a fun and energetic Press-Up Challenge that brought out everyone's competitive spirit. The mission was simple: complete as many press-ups as possible in one minute , Our team definitely rose to the occasion! The challenge was incredibly close, with several participants pushing themselves right to the final second. But one standout lifted the trophy: Jacob Cooper, who powered through an impressive 67 press-ups in unde

We are proud to announce that Design Rationale Ltd  has been named Contractor of the Month  by Mace this  November recognising our outstanding performance in quality, health & safety, and project management for the Heathrow Terminals 5  projects .This achievement reflects the hard work and dedication of every member of our team, and our continued commitment to delivering excellence across every package we deliver. The celebrations don’t stop there, On the Heathrow Terminals 3

At Design Rationale, quality is not just a promise, it’s a process. Every project we undertake is backed by rigorous inspection and uncompromising standards to ensure that the materials installed meet the highest level of performance and aesthetics. Take a recent project of ours supplying Architectural Metalwork Cladding as an example. During our recent visit to Rimex Metals UK, we inspected the Mill Finish Stainless Steel panels prior to Shot blasting to ensure that there we

Location Hatfield, Hertfordshire, UK. About the Business Design Rationale are delivering high-quality architectural metalwork and glazing solutions on complex projects. We combine solid engineering with architectural detail, working on everything from bespoke steel and aluminium fabrications to high-performance glazing systems. Projects are taken from early design and budgeting right through to manufacture and installation. The team is stable, professional and collaborative,

At Design Rationale , we’re proud to join the industry in celebrating Quality Week -a time to reflect on the importance of quality in everything we do, particularly within the construction sector. Quality isn’t just a target for us; it’s a culture that drives how we design, collaborate, and deliver. In recent months, we’ve seen an encouraging increase in factory visits and inspections carried out by our Quality Managers and Project Managers . This hands-on approach is alread

At Design Rationale, we believe wellbeing thrives when teamwork, creativity, and a touch of fun come together. For Octobers event,  our team swapped working stations for a new kind of challenge , An Escape Room adventure designed to boost wellbeing, collaboration, and connection. Teams came together to crack codes, solve riddles, and uncover hidden clues - all while racing against the clock. The room was filled with laughter, teamwork, and plenty of “aha!” moments as colleagu

We are proud to announce that we’ve been awarded a Health & Safety Award by Mace, for our outstanding performance on the Heathrow Terminal 5 project. As a bespoke architectural glass and metalwork subcontractor, safety is at the heart of everything we do from design and fabrication to installation. This recognition highlights our team’s unwavering commitment to maintaining the highest standards of health, safety, and wellbeing on site. The award reflects the dedication and pr

At Design Rationale, our pursuit of excellence in bespoke architectural glass and metalwork is underpinned by the strength of our long-standing partnerships. One of our most valued and enduring collaborators is LS Fabrications, based in Welwyn Garden City. We recently had the pleasure of revisiting their facilities a site that has become a cornerstone in the realisation of many of our most ambitious projects. Our partnership with LS spans over three decades, during which time

U pholding Our Pledge to Sustainability, Safety, and Exemplary Construction Standards At Design Rationale, we hold steadfast to the belief that exceptional design must be intrinsically linked with environmental stewardship and the safeguarding of human well-being. It is with great pride and a sense of earnest responsibility that we announce our attainment of the ISO 14001 (Environmental Management) and ISO 45001 (Occupational Health and Safety) certifications-internationally