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The most up-to-date brand of uPVC profile on the market. With a focus on research, development and design, the Liniar range continues to push the boundaries when it comes to product innovation.
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Our story

Liniar’s story started back in 1974 with the formation of PVCu extrusion company HL Plastics. Since then, it has grown to become one of the UK’s most innovative manufacturing businesses, designing award-winning product ranges and retaining a clear customer focus. Scroll down to take a look back at our history!

2023

Zero|90 Launch

Liniar launches an ultra energy efficient Zero|90 and Zero|90R 90mm uPVC window and door system, with fantastic sound-reducing properties and a recycled core.

Zero90

£3 Million Mixing Plant Opens

Liniar opens additional, twin mixing plant with advanced technology to switch between rigid and foam PVCu, doubling capacity and maximising future efficiencies.

Liniar Increases Capacity With The Opening Of £3 Million Mixing Plant
2022

‘A Part of Something Bigger’

Liniar celebrates being ‘a part of something bigger’ with a group-wide Quanex brand refresh, aligning brand colours and introducing our new tagline.

part

NEW DECKBOARD IS LAUNCHED

Liniar launches its solid double-sided deckboard, SwitchBoard Ultra. Fitted like timber decking, the new board is perfect for gardens and public areas.

 

Switchboard ultra decking

Carbon Neutral

Liniar continues its path to Carbon Neutral by replacing all of its fleet cars with electric vehicles and installing charging points on site.

car
2021

SWITCHBOARD DECKING LAUNCH

SwitchBoard, Liniar’s double-sided PVCu composite decking system, is launched to great acclaim.

switchboard

G Award Win

Liniar wins a coveted G Award – Covid-19 Hero - for the work it undertook making PPE visors during the Covid-19 pandemic.

g award

Phenomenal Growth

Liniar achieves phenomenal growth, hitting its 2024 strategic target 3 years early.

Customer service team
2020

Resilience Amid Supply Chain Disruption

Despite supply chain disruption and soaring demand, the year ends with the business fully back on track.

lorry

Making Protective Visors

Liniar closes its doors for 6 weeks during the COVID-19 pandemic and begins manufacturing protective visors for key workers – winning two awards as a result.

visors
2019

Product Launch

The UK’s first double-rebated flush sash PVCu window, Resurgence is launched, winning Product of the Year at the 2019 National Fenestration Awards.

Resurgence window

Sustainability Recognition

ISO14001 accreditation is achieved and Liniar is a finalist for the Sustainability Initiative of the Year 2019 at the G19 Awards.

G19 Awards

Introduction of Elevate Squared Lantern Roof

Liniar launches Elevate Squared – a perfectly square version of the traditional rectangular lantern roof.

sqaure
2018

Reversible Window Launch

The fully reversible window is launched, with the Elevate lantern roof following later in the year. Fencing also became available in two new finishes – woodgrain foiled and composite!

Reversible window

Leadership Transitions To Martin Thurley

Roger Hartshorn passes on the running of the Group to Martin Thurley after a 2-year handover.

Roger Hartshorn with Martin Thurley
2017

Grand Opening Of Purpose-Built Warehouse

178,000 ft² warehouse is opened.

liniar house

Roger Hartshorn Meets Her Majesty

Roger Hartshorn attends a reception at Buckingham Palace to meet Her Majesty.

queen

Liniar Earns Queen’s Award For Innovation

Liniar earns a Queen’s Award for Enterprise in Innovation for the ModLok™ bi-folding door.

queen award
2016

Completion of 178,000 ft² Warehouse

Construction of a 178,000 ft² warehouse is completed.

build

Product Launch

Alumina, the first fully foiled aluminium bi-fold is launched.

alumina
2015

Construction of a 178,000 ft² Warehouse Begins

New 178,000 ft² warehouse to be built to facilitate further growth.

build

Quanex Acquires Flamstead Group

Quanex Building Plastics acquires total ownership of Flamstead Group.

Roger Hartshorn and Bill Griffiths
2014

Product Launch

ModLok™ bi-fold launched along with the introduction of Liniar roof kits and the Flush Sash system.

modlok bi-fold

Prime Minister visits Liniar

Prime Minister David Cameron visits Denby headquarters.

pm
2013

Refreshed Liniar Branding

The Liniar brand identity is refreshed.

old brand

Liniar Expands

New lamination plant is opened along with 60,000 tonne mixing plant.

Liniar lamination department
2012

 ModLok Patio Introduced

Liniar Patio with ModLok is launched.

modlok patio

60,000ft2 Warehouse Built

A 60,000ft2 warehouse is built to keep all products on one site.

Man wearing high-vis walking through Liniar's warehouse
2011

 Tool Maintenance Department Commences

Tarpey Harris launches a tool maintenance department.

th

Liniar Zoom System Launch

Liniar Zoom conservatory system is launched.

zoom
2010

Introduction of Liniar EnergyPlus

Liniar EnergyPlus profile is also launched.

EnergyPlus PVCu window profile cross-section

Groundbreaking uPVC Bi-fold Door Debut

Liniar introduces the first uPVC bespoke bi-folding door.

bi-fold door
2009

Sculptured Window System Launch

Sculptured Liniar window system is launched.

sculp

Decking System Launch

New Liniar handrail and recycled deck system launched.

original deck
2008

Chamfered Window System Launch

Brand new chamfered Liniar window system is launched combining strength & energy efficiency.

cham
2007

Product Launch

The Liniar fencing and gravel board system is launched.

classic fencing

Flamstead Group Relocate

The Flamstead Group relocates to new factories in Denby.

flamstead house
2006

Liniar brand Introduced

The Liniar brand name is introduced to the Flamstead Group.

lin old

Building Commences

Construction begins on the new factory for HL Plastics and Tarpey Harris in Denby.

site
2005

Flamstead Holdings Is Formed

Roger Hartshorn and Mike Bosworth form Flamstead Holdings to buy back HL Plastics and Tarpey Harris.

history

Wax Injection Department Opens

Tarpey Harris opens wax injection dept.

tarpey
2003

Purpose Built Warehouse

New 140,00ft2 warehouse built in Alfreton.

alfreton warehouse

Tessenderlo Group

Tessenderlo Group acquires 100% of the group, after previously acquiring 75% in 1998.

history
2001

 

Tooling Development

10 strand foam trim tool developed.

history

Conservatory Roof Introduced

Eurocell develops Pinnacle conservatory roof & co-extruded 70mm Logic system.

eurocell

Product Launch

HL Plastics develops Suredeck safety platform.

HL Plastics Logo
1999

Product Launch

HL Plastics develops veranda system and Eurocell sliding patio door.

veranda

4400 Tonne Mixing Plant

A 4400 tonne raw material capacity mixing plant is installed at Clover Nook.

factory
1997

Purpose Built Factory

Eurocell production outgrows Little Eaton and moves to new purpose-built factory in Alfreton.

eurocell factory

Fairbrook Group

The group consisting of HL Plastics, Tarpey Harris and Eurocell Building Plastics is renamed Fairbrook.

hlp
1995

John Wall Retires

John Wall retires.

john
1994

Trade Centre Opens

The first building plastics trade centre opens in Dorset.

eurocell

70mm System

HL Plastics designs and launches new window system – Eurocell Ultimate 70mm System.

hl
1993

Product Launch

HL Plastics launches a range of Plastic Piling from recycled uPVC and develops in house injection moulding.

piling

Godfrey Harris Retires

Godfrey Harris retires and is presented with a Myford Lathe.

godfrey harris
1991

Eurocell Brand Launched

HL Plastics creates the Eurocell brand name to supply these to the growing base of windows customers.

eurocell
1990

Product Launch

Second own-brand product range is launched - a range of cellular foam building products to supply the growing base of window customers.

old hl
1989

HL Plastics Acquires Tarpey Harris

HL Plastics purchase Tarpey Harris Precision Toolmakers to gain access to the latest toolmaking technology and control supply chain for future development.

tarpey
1988

Management Buyout

A management buyout is led by Roger Hartshorn and Mike Bosworth.

hl old
1981

Product Launch

HL Plastic’s first own-brand product range is launched – Suregrip Duckboard System for roof walkways.

history
1977

Purpose Built Factory

HL moves to a new purpose-built 17,000 ft2 factory in Little Eaton, Derbyshire.

hl
1974

HL Plastics Formation

Trade extrusion company started by Godfrey Harris and Stuart Leese in a 10,000 ft2 factory at Riddings in Derbyshire.

HL Plastics Logo