Complex sentence: The section of line from St Helens to Wigan opened in 1869 and the line from Huyton to St Helens was opened 1 November 1871 bther were built by the London and North Western Railway.
Split into simpler sentences: The section of line from St Helens to Wigan opened in 1869 and the line from Huyton to St Helens was opened 1 November 1871. Both were built by the London and North Western Railway.