Complex sentence: St. Pancras will allow for connections with the Underground, and trains to/from the Midlands, Scotland, and North of England, while Ebbsfleet will provide connections to/from train and bus services in North Kent and the Thames Gateway.
Split into simpler sentences: St. Pancras will allow for connections with the Underground, and trains to/from the Midlands, Scotland, and North of England. While Ebbsfleet will provide connections to/from train and bus services in North Kent and the Thames Gateway.