Innovative PVCu extrusions
and creator of the Liniar brand

Award winning manufacturing in the heart of the UK


Flamstead House

Designing and manufacturing lead-free PVCu products at its state of the art factory in Derbyshire, HL Plastics is part of the Flamstead Group of companies, which also includes Avantek Machinery. Having won the inaugural Derby Telegraph Company of the Year and the Growing Business of the Year (mid-sized company) awards in 2014, HL Plastics is the creator of the Liniar brand, a range of PVCu products for homeowners, the windows industry, the holiday home market and the construction industry. The company is one of the Amber Valley’s largest employers and has a reputation for innovation, responsiveness and customer service. Trading since 1974, HL Plastics has grown substantially over the past five years in particular and continues to invest in new technology, machinery, training and development in order to sustain that growth.

Latest news

Local Business Helps Manufacturers Prepare for Brexit

Who knew what a mess Brexit and the negotiations into our exit would be when Great Britain chose to divorce the European Union over three years ago? As the media warns of impending doom and the clock counts down ever closer to 31 October – when we’re set to leave the...

Local Manufacturer Supports Marehay Show

Local Manufacturer Supports Marehay Show Since 1974, HL Plastics has been one of the largest employers in the Amber Valley. Located between Denby and Ripley in Derbyshire, HLP employees over 550 people from the local community in a variety of job roles spanning from...

Recent awards

June 2014 Growing Business


Our latest vacancies are shown here – but we’re always looking for new talent, so if you don’t see a role advertised here please contact us with your CV.


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Find out more about HL Plastics, its growth and the design and production processes used to create products under the Liniar brand.



A division of Quanex Building Products