Complex sentence: As c2c is mainly a London commuter railway and the average c2c journey is between 40 and 70 minutes, c2c does not offer first-class seating, its Class 357s have standard high-density 3 +2 Chapman seating to meet high demand at peak times.
Split into simpler sentences: As c2c is mainly a London commuter railway and the average c2c journey is between 40 and 70 minutes, c2c does not offer first-class seating. Its Class 357s have standard high-density 3 +2 seating to meet high demand at peak times.