Complex sentence: Because of this in the 1800s when the private British Rail companies of the time wanted to join Chessington South railway station, with Leatherhead Station they were denied planning permission fron the Government because of the protection order.
Split into simpler sentences: Because of this in the 1800's when the private British Rail companies of the time wanted to join Chessington South railway station, with Leatherhead Station. But they could not get planning permission fron the Government because of the protection order.