Who we are


We bring a fresh, innovative approach to what we do. As a diverse mix of people with different backgrounds and skill sets, we’re brought together by our engineering ability, ambition, innovation, and team spirit. Our team is a unique build, and this helps us deliver on every promise.



Leonari was born in January and we quickly secured our first project, 82 Baker Street. Our first employee started in August, he is still with us. Our first year turnover is £1m. Not bad for our little start-up.


Our turnover grows to £4m. We are very excited about the 4 new clients that we secured and that we still look after today!


Exciting times, revenue increases with 12 clients on the books. With this growth we move into our new office on Borough High Street.


Pandemic hits the UK but business as usual for us. By December of this year, we reached a key milestone that we are proud of - securing our 200th project!


Company revenue is growing steadily with 38 clients and 8 employees.


Leonari 360, our sister company, is founded in September and we go on to secure Phase 2 works on the prestigious Chelsea Barracks project in London.


Our journey continues. Great projects in the pipeline with a £25m projected turnover for 2023.


We always deliver.

Every building, every project has different needs - we understand that. We offer turnkey design and build or build-only mechanical and electrical services across multiple sectors, including commercial fit-outs, residential, educational, and capital plant replacement works.

Our M&E engineers have the ability to design and coordinate multidisciplinary systems to suit the specific makeup of a building. Our teams on site have the hands on experience and technical know-how to deliver a project to the highest quality, on time.

For us, it’s all about building an open, down-to-earth partnership with our client, getting to grips with the end-users’ needs. We understand that we are one of the key players within the wider building team to achieving this and we make sure that we always deliver.