This is a scale-up bet on compostable materials because Shellworks is moving from pilot volumes to mass-market supply, and the bottleneck is production infrastructure, not demand.
UK-based materials science startup Shellworks has raised EUR 13.89 million in funding, with backing from alter equity, Nat Friedman, JamJar, Founder Collective, LocalGlobe and Third Sphere, according to Tech.eu. The company, founded in 2019, develops Vivomer, a plastic-free biopolymer produced through microbial fermentation of waste biomass such as used cooking oil.
What the funding is for
Shellworks is explicit about the use of proceeds: build production capacity, broaden its manufacturing footprint, and accelerate commercial rollout beyond early categories. The company is also pushing harder into the US and EU, where brands are looking for credible alternatives as regulation and retailer scrutiny increase.
The operational target is equally clear. Shellworks plans to lift shipments from around 3 million units by year-end to nearly five times that level next year. That kind of ramp is less about lab innovation and more about industrial execution: consistent quality, reliable throughput, and unit economics that hold up when volumes rise.
Why Vivomer is getting attention
Shellworks positions Vivomer as a practical packaging material rather than a niche eco-product. The company says the material is cost-competitive with aluminum, glass and paper, despite operating at a fraction of traditional plastic’s production scale. If that claim holds as capacity expands, it matters: packaging buyers typically tolerate only limited price premiums, especially in high-volume consumer categories.
Vivomer’s certification stack also addresses a major barrier in compostables: proving end-of-life performance in multiple environments. The material is certified home-compostable (TUV OK HOME) and industrially compostable (EN13432), and it is also certified marine biodegradable (ASTM D6691) and landfill biodegradable (ASTM D5511). Shellworks also argues the material is microplastic-free, non-toxic and stable in use, with full biodegradation within 52 weeks in soil.
Commercial traction: from niche to shelves
Shellworks already has a credibility advantage that many materials startups lack: products in mass-market retailers including Tesco, Target, Boots, Holland & Barrett and Whole Foods. It has also built partnerships through brands such as Unilever’s Wild and Phil’s, initially anchored in cosmetics and personal care.
That matters because packaging materials live or die on adoption cycles. Retail presence suggests the company has moved beyond prototyping into repeatable manufacturing and compliance processes, even if at limited scale. The next phase is about expanding into broader formats and categories where performance requirements and regulatory exposure are higher.
The bigger signal: packaging is shifting from “green claims” to verified materials
This round fits a wider trend in European venture and growth funding: capital moving toward materials that can be validated, certified and supplied at scale. Regulators are tightening definitions around recyclability and compostability, while large consumer groups want packaging solutions that survive procurement scrutiny.
Shellworks is leaning into that shift by combining certifications with a manufacturing scale-up plan and an expansion push into jurisdictions where single-use plastics face rising restrictions.
Execution risks to watch
The strategic rationale is straightforward, but the risk is equally straightforward: scale manufacturing without performance drift. For compostable polymers, small changes in feedstock, process conditions or formulation can alter durability and end-of-life outcomes. Shellworks also needs to prove that “cost-competitive” remains true when it moves from early production to larger networks and longer supply chains.
The other risk is market education and claims governance. As rules tighten, brands and retailers will demand more documentation and tighter language around biodegradability and compostability. Shellworks’ certification coverage helps, but scaling into new markets typically increases compliance overhead.
For now, the financing gives Shellworks runway to turn Vivomer from a promising material into an industrial platform. The next 12-18 months will be judged less on new chemistry and more on whether supply becomes dependable enough for large-scale packaging commitments.
Source: Tech.eu (March 2026).