UK Preferred Partner for Movex®
About SL Plastics
Three Decades of UK Engineering
From a small Suffolk workshop in 1991 to the UK Preferred Partner for Movex®, our story is one of long-term customer relationships, in-house engineering expertise, and a commitment to “best value, lowest cost”.
Our Philosophy
You Do Not Have to Be the Biggest, To Be the Best
SL Plastics was founded in 1991 by Spencer Leaver to fill a niche in the market for engineering plastics, particularly for packaging equipment and conveyor systems. Our philosophy has remained unchanged ever since, and is reflected in how we win our customers’ long-term loyalty: many of those who joined us 30+ years ago are still with us today.
All our clients benefit from specialist plastics knowledge, expertise and commitment as we continue to grow on the principle of best value, lowest cost, and the most reliable plastic supply available in the UK today.
Our Journey
Three Decades of Growth
A timeline of the milestones that shaped SL Plastics into the UK conveyor parts company it is today.
1991
The Founding of SL Plastics
Spencer Leaver formed SL Plastics in 1991 from a small Suffolk workshop to fill a gap in the market for engineering plastics, particularly for the packaging equipment and conveyor industries. From day one the principle was simple: best value, lowest cost, with the most reliable supply.
Many of the customers who joined us in those early years are still with us today, three decades on, which we consider the highest possible endorsement of the way we work.
1991
2013
2013
Becoming a True 'One Stop Shop'
In 2013 we became a UK distributor of premium conveyor components, extending the quality and reliability of our service so that customers could source both bought-out and machined components from a single supplier.
Increasing stock levels to work with each customer individually, we focused on providing parts off-the-shelf rather than with lengthy lead times, complementing our own production methods and CNC machining capabilities.
2017
50% Growth Through Investment
Having seen growth of over 50% in our financial year, achieved through strong investment in our factory, equipment, staff and supply chains, we cemented our market presence through a commitment to each account: the best service from quote to delivery, competitive prices and consistent quality.
Where competitors say “it cannot be done that quickly”, we ask “when do you really need these parts? We will find a way to get them done.” That mindset has driven every year since.
2017
2022
2022
UK Stockholding Expansion
Continued investment in our UK warehousing allowed us to significantly expand the array of conveyor chains, belts and components held in stock for our growing customer base.
New product lines opened up applications in spiral conveyor systems, hygienic food belts and other specialist markets, cementing our position as one of the largest UK suppliers of quality, tried and tested conveyor components.
2026
Appointed Movex UK Preferred Partner
A new chapter for SL Plastics. Following an in-depth visit to the Movex factory in Bergamo, Italy, where Spencer and Euan Leaver met the Movex team and saw the quality of products, innovation and management first-hand, we are proud to be appointed as Movex’s UK Preferred Partner, Stockist and Supplier.
The partnership brings the full Movex range to the UK market: conveyor chains, belts and components serving the beverage and packaging industries we have always supported, plus the hygienic food belt market through the Movex Blueline series. Together with our continued investment in UK stockholding, in-house CNC machining and 30+ years of conveyor specialist expertise, we are excited to deliver an even stronger one-stop shop for British manufacturers.
2026
What We Do Today
From Design to Delivery, Under One Roof
In-House Manufacturing
We work with you from initial design through production to delivery, ensuring you benefit from cost savings on material, design or production quantity decisions.
With three heavy-duty CNC routers, mills and a lathe, we have the capacity to manufacture anything from prototypes and one-offs through to large production runs, with consistent accuracy and quality assured.
Engineering Partnership
By working together, we deliver cost effectiveness across your range of engineered plastics. We will help you think through:
- Are you using the most appropriate materials?
- Can larger parts be made to reduce material usage and cost?
- Are wear parts designed to be easily replaceable?
- Could one supplier replace several you currently use?
1991
Founded
30+
Years Experience
1700+
UK Stock Items
Same Day
UK Dispatch
Talk to a UK Engineering Specialist
Whether you need a single replacement part, a full conveyor specification, or a bespoke component machined to your drawing, our Norfolk-based team is ready to help.
