Form Structural Design was established in 2005 by chartered engineer Andrew Ilsley to provide specialist structural engineering consultancy to private residential clients, speculative developers, architects, contractors and public sector bodies including councils and housing associations.


Form specialises in structurally challenging, architecturally stimulating, new build and refurbishment work including period and listed buildings. Our portfolio of work includes residential, education, retail, leisure, commercial and interiors projects in both private and public sectors.


The practice ethos is to provide innovative and cost effective design solutions to ensure architectural intent is achieved. A director is involved in every project, irrespective of size or value, ensuring a well-managed ‘hands on’ service to all clients. We pride ourselves on being commercially and architecturally aware and believe our brand of engineering can enhance any project.










New build, Fish Island, Hackney

New Hub, Queen Elizabeth Olympic Park

About & Contact /

Triple basement, Cadogan Gardens

St Peters Primary School, Croydon

Located in the heart of London’s design hub, Clerkenwell, Form operates from an open plan studio environment encouraging collaboration and knowledge sharing while staff are continually trained to ensure they gain experience in the company's core areas of expertise: high specification residential, complex refurbishment, new build and subterranean.


Form prioritises investment in the latest design and detailing software, providing training to all staff to ensure the practice and employees’ potential is maximised. Staff are encouraged to expand their experience and level of responsibility by working on all types of projects across the refurbishment and new build spectrum. Training is provided for technicians and engineers, with external courses, in-house lunchtime CPD seminars and knowledge sharing sessions presented by senior engineers.


Our mentoring programmes, for both engineers and technicians, ensure staff development is carefully guided to create well rounded professionals with broad ranging experience and all the necessary confidence, tools and skills to work at the highest levels of the construction industry. We provide graduate development programmes for both ICE and ISE chartership.



77 St John St




tel 020 7253 2893


JC Decaux, Praed Street