Complex sentence: The acceptance of Oyster pay as you go on National Rail has now been implemented across the Travelcard area (Zones 1-9 plus Watford Junction), and at c2c stations at Purfleet, Ockendon, Chafford Hundred and Grays.
Split into simpler sentences: The acceptance of Oyster pay as you go on National Rail has now been implemented across the Travelcard area (Zones 1-9 plus Watford Junction). Additionally, Oyster pay as you go is now valid at c2c stations Purfleet, Ockendon, Chafford Hundred and Grays.