I've got an update guys. Great news, the PCN was cancelled. Thank you so much guys for the help. The appeal letter was extremely key to this successful outcome. You just saved me some dosh there.
I now avoid leaving my car there where I got the pcn ticket. The council has been coming up with several excuses why they have not yet installed the personalised permanent disblaed bay. Initially, I was told the IT systems was just changed(April 1) and it would take them several weeks to get training done before they can install the bay. After some weeks, I called the council again. I was then told they have given the contractor the goahead and it should be done within 28 days. In the meantime, they have put in place a temporary disabled bay that is not enforceable.
Anyways, I am glad that you guys came to rescue with the pcn ticket.