The materials giant will transfer manufacturing of its Access Covers and Gratings products to asister factory in Blénod in France.

St Gobain said the French plant  “has received considerable investment to significantly reduce the amount of carbon emissions associated with the manufacture and supply of these products.”

The Holwell closure is expected to ce complete by the end of the year and a consultation process is now underway with staff and the GMB union.

Alan Gwilliam, Managing Director of Saint-Gobain PAM UK, said: “It’s with great sadness we announce the proposed closure of our Holwell site in Melton Mowbray.

“Our business has had to contend with Brexit, Covid and considerable cost increases over the last few years. Despite the huge efforts from the Holwell team, the factory has become uncompetitive and with excess capacity within our European manufacturing footprint, the proposal to consolidate our manufacturing sites is the sensible solution.

“The factory in France has recently had an investment to reduce the carbon intensity of production, which will result in a significant reduction in the carbon emissions related to our products of 50% in future. This is a considerable driver for our business and our customers as we continually seek ways to reduce our overall environmental impact.

“We know this is a significant announcement that will affect many local people as well as the many employees of the site, the majority of whom are from the town.

“Holwell has been an important part of the town since 1881 and we know there are many local people with current and past ties to the plant. We will of course act with consideration and respect to all involved as we move through this uncertain time.”