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The Assembly, Stevenage Town Centre

At a Glance

Promoter: Reef Origin / UBS

Location: Stevenage town centre, SG1 1XN

Total Floor Area: c. 530,000 sq. ft. including completed Autolus Therapeutics HQ development

Investment Type: Life sciences

Asset Class: GMP, Laboratories, Office, Retail

Planning Status: Planning obtained

Delivery Timescale: 2026 onwards

Site Description

Reef Origin has been working in collaboration with UBS to create life sciences platform Forge_Kn. This includes Autolus Therapeutics – a c. 82k sq. ft. advanced manufacturing facility in Stevenage town centre as well as The Assembly redevelopment which will provide an additional 450k sq. ft. of advanced manufacturing space.

Reef Origin, UBS and the council’s plans convinced Autolus Therapeutics to move their manufacturing HQ planned for Maryland, USA, to Stevenage. They developed the UK’s first purpose-built Car-T cell manufacturing facility, putting Stevenage on the global stage in the life sciences arena and it has further cemented the town as Europe’s centre for cell and gene therapies. 

The Assembly development will see four new laboratory buildings designed to accommodate advanced manufacturing alongside a collaboration and skills development. The ground floor space will provide new amenity offer for the wider public including space for a restaurant, cafe, retail and a cinema.

The investment will support the regeneration of the town centre and complement Stevenage’s cutting-edge life sciences cluster, leading on areas of cell and gene therapy.