PCN not on windscreen

Hi. I had stopped to talk to an old friend. Whilst I was doing so n officer was giving a PCN. As soon as I saw I drove off. The PCN was not attached to the windscreen.
The evidence only shows the car stopped.
Is there any help.
Much appreciated thanks.

For meaningful advice please to have a read of
https://www.ftla.uk/civil-penalty-charge-notices-(councils-tfl-and-so-on)/read-this-first-before-posting-your-case!-this-section-is-for-council-tfl-dartme/

and post up all sides of the PCN (only redactr your name & address), any council photos and a GSV link to the location.

As per John UK, please update your post.

Drive-away PCNs were introduced in the Traffic Management Act 2004 to cover a driver driving away before a PCN being prepared could be served to either car or driver. If you read the PCN your received by post it will tell you all this.