LSY has delivered sustainable, innovative engineering solutions on time and within budget since 2016. We are a London-based civil and structural engineering practice servicing the UK and beyond. We fuse passion and expertise to design and deliver both permanent and temporary works across every sector, specialising in high-value structures.



We believe that the best way to create efficient designs is to work in a collaborative Building Information Modelling (BIM) environment.

Structural Design

We provide civil and structural engineering designs for both temporary and permanent works – something of a rarity in our industry.


We offer a range of comprehensive surveys for private investors, property funds, insurance companies and housing associations.

Meet the Team

Our team at LSY has over 75 years of collective engineering experience working on high-profile projects around the world.

Seán Young | Managing Director

Seán is the company’s Managing Director holding the qualifications: BEng (Hons), CEng, MIStructE, MIEI and MIEAust.

Brian Turner | Structural Consultant

Brian is a Chartered Civil and Structural Engineer with over 50 years of experience in the industry.

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