If you are pregnant and in your last eight weeks of pregnancy before maternity leave, you may apply for an authority to travel which will allow you to sit in a First Class seat if there are no seats available in Standard Class.
To obtain this authority you must be in possession of a season ticket photo card. If you do not hold such a card please take a recent passport size / style photograph to any Greater Anglia ticket office. A photocard will created for you free of charge.
For more information, please click here