Alastair Ferguson is a Chartered Architect and expert witness with over 30 years’ experience in the design, delivery and forensic investigation of complex residential and mixed-use projects. Known for his dry wit, quiet confidence and formidable technical intellect, Alastair brings clarity and assurance to even the most challenging architectural disputes.

His career spans high risk residential towers, award-winning mixed-use developments, listed building refurbishments and major urban regeneration schemes. Since moving into expert witness work, he has specialised in fire safety, façade performance, waterproofing and allegations of architectural negligence, providing evidence in the Technology and Construction Court and the First-tier Tribunal.

Clients often comment that he can explain technical issues in a way that anyone can understand – without
ever dumbing the material down.

Alastair’s expertise includes assessing Building Regulations compliance, design responsibilities, contractual duties and construction quality. He is highly regarded for his ability to present complex architectural reasoning with precision, logic and a calm analytical approach. Many clients return to him repeatedly, valuing both his intellect and his dependable judgment.

Friendly in the right moments – though no great fan of unnecessary socialising – Alastair’s measured presence, technical depth and signature dry humour makes him a trusted and reassuring expert. His “big brain” reputation within the team is well-earned, and he remains a go-to advisor for matters requiring both
deep expertise and clear, thoughtful communication.

Colleagues often say that if Alastair can’t explain it simply, it probably can’t be explained.