Thank you for all of your responses.
I have attached the actual letter as asked for.
Will wait to see if there are any more responses and then draft a letter of appeal.
Hello dx100uk, thank you for supplying the link, will answer those questions now:
1 Date of the infringement
05 April 2017
2 Date on the NTK [this must have been received within 14 days from the 'offence' date]
17 May 2017. Although "29 days have passed from the date notice of the Parking Charge was given" suggests I should have received something else beforehand which I did not receive.