At just over 86,000 sq ft the unit will be transformed into a manufacturing and distribution hub where craftspeople will continue to manufacture the bikes and accessories.
SEGR~O said the lease was for 15 years "and will enable the company to meet its ambitious expansion plans and to meet the increasingly international customer demand".
Brompton Bicycle will fit out the unit with technology, including rapid prototyping using 3D printers through to precision CAM machinery.
The new facility is located close to the A40 and M40, with direct access to the heart of
London – home to Brompton's flagship store - as well as easy access to Heathrow from which the company can reach its 44 export markets.
Will Butler-Adams OBE, chief executive officer of Brompton Bicycle, said: "We are committed to London; Brompton was born from a need of city living, our staff are Londoners and the city continues to inform how the Brompton develops.
"The move represents our ambition, passion and long-term commitment to improving the way that people live in and circumvent our cities, on a global scale. It also represents our desire to continue to innovate, both our product and the production process, to ensure lasting quality and value to our customers."
