When you appeal a bus lane penalty fine you must do so in writing to:
PO Box 2994,
Stoke on Trent,
Alternatively you can send it via email to: firstname.lastname@example.org
Make sure you include your PCN number, which starts with the letters GE, and your full address. Try to make your appeal as clearly and simply as possible, while including copies of any evidence that could help support your case.