Innovative PVCu extrusions
and creator of the Liniar brand

Flamstead Group


The group consists of three main trading companies, with complementary operations as well as their own distinct market sectors:

  • HL Plastics Ltd;
  • Vintage Windows, a bespoke window and door fabricator based in Riddings, Derbyshire; and
  • Avantek Machinery Ltd, a supplier of fabrication machinery to the window industry.

The Flamstead Group employs around 500 people in total and was listed in the London Stock Exchange’s book: “1,000 Companies to Inspire Britain” in its two first editions (2013 and 2015).

The Liniar brand is a registered trademark belonging to HL Plastics Ltd.


Flamstead Group