Engineered bio materials for industrial performance.
encircol is developing a new class of engineered bio materials for high-performance industrial applications. The foundation is collagen - a high-value biological resource generated as a by-product of leather manufacturing.
Through BioPRO® technology, that collagen stream is transformed into precision-engineered materials with properties competitive with, and in some applications superior to, conventional petrochemical-derived alternatives.
encircol is pre-commercial. We do not yet offer industrial products for specification. We are developing application formats, validating performance, and building the partnerships that will bring these materials to market.
What we are building
Industrial material formats - construction and advanced manufacturing
Injection-mouldable and shaped bio material compounds
Application-specific validation and testing frameworks
Commercial partnerships with industrial specifiers and OEMs
Current status
BioPRO® technology is certified and in commercial production. Application engineering for industrial formats is in progress. Industrial product availability is targeted for 2027.
The industrial backbone.
encircol is part of Scottish Leather Group, headquartered in Bridge of Weir, Renfrewshire. SLG is one of the world's leading manufacturers of high-quality leather for premium transport and performance applications. encircol inherits SLG's manufacturing rigour, quality systems, and collagen processing expertise.
200+
Years of manufacturing heritage
Net zero
Scope 1 & 2 carbon emissions
60+
Countries supplied globally
No. 1
Lowest carbon leather producer
Proven in the world's most demanding sectors.
Aviation interiors
BioPRO® is certified and in production for premium seating in commercial aviation. Scottish Leather Group supplies the world's leading airlines and aircraft manufacturers.
Automotive
SLG leather is specified by Rolls-Royce, Bentley, McLaren and other premium OEMs. The same quality infrastructure underpins encircol material development.
Mass transit
Rail and commercial vehicle interiors across Europe and Asia. Repeatable, certifiable, process-compatible - the baseline encircol materials must meet.
Engineered for how industry actually works.
encircol material development is designed around process compatibility from the outset. Testing, validation and application development are built into the process, not an afterthought.
Get in touch
Meet the team.
Board Members
Over 180 years of Scottish manufacturing heritage.
Muirhead established in Scotland, producing leather for aviation, marine and luxury interiors
W.J. & W. Lang established - a Scottish tannery specialising in bovine hides and collagen processing
Bridge of Weir Leather Company founded by Arthur Muirhead in Renfrewshire - automotive leather for the world's most prestigious marques
Muirhead expands into commercial aviation interiors - premium airline seating leather for the world's leading carriers
Automotive partnerships with Rolls-Royce, Bentley, McLaren and other ultra-premium marques established
Scottish Leather Group formed - Bridge of Weir and Muirhead united under one family-owned group
Net zero Scope 1 & 2 carbon emissions achieved across the group
BioPRO® technology development commences from collagen valorisation research
BioPRO® certified and in commercial production across aviation, automotive, and mass transit sectors
encircol established - bringing BioPRO® to high-performance industrial applications
Interested in encircol?
We welcome enquiries from industrial partners, specifiers, press and researchers.