https://www.ftla.uk/private-parking-tickets/read-this-first-private-parking-charges-forum-guide/ includes directions on what to post and how.
Smart’s notices from 2022 generally didn’t comply with the requirements of the legislation
An Act to provide for the destruction, retention, use and other regulation of certain evidential material; to impose consent and other requirements in relation to certain processing of biometric in...
to transfer liability from the unknown driver to the registered keeper, so don’t identify the driver either here or in any correspondence. You should use a Subject Access Request to obtain the notice from Smart if you don’t have it.
It’s not a
fine, it’s an invoice for payment under the contract the driver entered into by parking. There is a six year time limit under contract law to pursue.
If you post the front page of the N1SDT form with personal details (including claim number and password) but
not dates obscured, we can advise further. You have 14+5 days from the date on the form to file a defence or Acknowledgment of Service; if you do the latter you have an additional 14 days to file a defence.