Modern Synthesis

Market position

Modern Synthesis operates in the biomaterials/next-generation materials segment alongside mycelium- and fermentation-based players such as MycoWorks, Bolt Threads, Ecovative and Bucha Bio, differentiating by using bacterial nanocellulose rather than mycelium. Coverage notes the segment remains small: a 2021 Material Innovations Initiative report projected a $2.2 billion biotextile market by 2026, still only about 3% of the overall materials market, with supply of investable companies rather than demand cited as a constraint.

The company states it is not attempting to replicate leather but to create a distinct material category, combining bacterial nanocellulose with textile scaffolds to obtain strength and durability said to be comparable to animal and synthetic leather while using a fraction of the greenhouse gas emissions, water and land of animal leather. It emphasises avoiding harsh chemicals and synthetic binders used by some alternatives, biodegradability of the nanocellulose, design-to-shape production that reduces waste, customisable aesthetics and haptics, and compatibility with existing industrial textile equipment. Feedstock flexibility — bacteria able to feed on diverse inputs including agricultural waste — is presented as a route toward closed-loop production.

Technology

The core technology transforms bacterial nanocellulose, produced by a strain of bacteria (K. rhaeticus) isolated and sequenced from kombucha tea by scientists at Imperial College London, into textiles and coatings. Nanocellulose fibres are described as the strongest and finest form of cellulose, around eight times stronger than steel at the nanoscale. In the company's 'microbial weaving' approach, robotics place fibres into a scaffold in a desired shape or structure and bacteria grow around it, allowing pieces to be designed to shape with minimal offcut waste; early reporting cited a roughly 10–14 day production cycle. The process was later split into fermentation, ex-vivo enhancement of nanostructures (altering properties such as pliability and strength) and combination with textiles such as hemp, linen or lyocell — likened by the CEO to rebar reinforcing concrete — so material can be processed on conventional textile equipment. The technology is patent-pending, and the company has explored synthetic biology (for example, engineering the bacterium to produce melanin pigment) while using the natural strain in current production. Machine learning is used to simulate and optimise material variations.

Go-to-market

The company pursues two parallel channels: co-development partnerships with brands, which have produced visible showcase products such as GANNI's 'Bou Bag' (2023) and a Medium Tote with BEEN London (2025), and partnerships with global supply chain manufacturers to bring materials to market at volume. It has stated it delivered material to a 'key sportswear customer' for prototyping and maintains a waitlist of brands, with the 2025 round intended in part to service more of them. Visibility is also built through design and sustainability venues, including the London Design Festival and the Sustainable Markets Initiative 2026 Roundtables & Exhibition.

Fashion and luxury brands, sportswear companies, and — as an expansion area — automotive and other consumer product manufacturers, plus textile and coating manufacturers in the global supply chain.

Geography

Headquartered in London, United Kingdom (Unit 12 Zennor Trade Park, Zennor Road, Balham, SW12 0PS; registered office 12-13 Zennor Road, SW12 0PS), with a London pilot facility. One source reports operations across two regions, and the company works with European research partners and international brand partners including Denmark-based GANNI.

History

The company was officially started in 2019 and, per the CEO, effectively began operating in 2020, when the pandemic prompted Keane — then a creative resident at Bolt Threads — and Reeve to commit full time. It raised a $4.1 million seed round reported in 2022 to build a London pilot facility with lab, sampling and pilot production capabilities. In 2023 it unveiled the GANNI 'Bou Bag' at the London Design Festival, followed by press coverage in Fast Company, AgFunderNews and Wonderland. In February 2025 it announced a $5.5 million oversubscribed round led by Extantia Capital, bringing stated cumulative funding to $11 million or more, and released a collaboration tote with BEEN London. Later milestones include Positive Luxury certification, exhibiting at the Sustainable Markets Initiative Roundtables in March 2026 and a Times Entrepreneurs Network profile of Keane in July 2026.

Risks & controversies

Named challenges include scaling production from pilot volumes, the small size of the biotextile category relative to the overall materials market (projected at about 3% by 2026), competition from mycelium- and other fermentation-based alternatives, and the technical tension between adding chemistries needed for durability and water resistance and preserving recyclability of bio-based materials. The company also notes exposure to evolving performance and regulatory requirements, and reports upstream Scope 3 emissions and supplier data collection as areas of active management. AgFunderNews discloses that its parent company AgFunder is an investor in Modern Synthesis.