You’ll need a photocard (as a form of ID) to buy and travel with a Season ticket. These are issued free of charge from ticket offices; all you need to do is provide a recent passport-type photograph of yourself.
Where required, your photocard number must be on your Season ticket – and for your Season ticket to be valid, you must show both your Season ticket and photocard with matching numbers if requested by rail staff.
If you’re using a Smartcard to travel, you won’t need a photocard on c2c services if your Smartcard has a photo, but may be asked to present one if travelling on another operator as part of your journey.