Parkside Colliery is a 232 acre site positioned close to the Langtree’s Newton-le-Willows offices. The site formed part of the Lancashire Coalfield, although the colliery use ceased when the pit closed in 1993.

The site is located to the East of Newton-le-Willows and is bordered by the A49 to the West, the West Coast Mainline railway in the North West and the Liverpool to Manchester Railway to the North. To the East is the M6 Motorway and to the South is open countryside leading to Winwick and the M62 Motorway beyond.

The site is now owned by a joint venture company between Langtree and St Helens Council.