Well I would definitely not suggest you try appealing this yourself, as none of the arguments here are either straightforward or open and shut. However I'm happy to represent you if you'd like to carry on.
The main points I can see are:
1) The camera authorisation point, which Leeds have never encountered so it's unlikely they'll be particularly well equipped to respond to,
2) The date of service is mis-stated, a NoR issued on 25 October is deemed served on 27 October, no idea where they got the 31st from. Giving the wrong date of service messes up the 28 day period, which should be considered a serious procedural impropriety.
While the outcome cannot be guaranteed, I certainly think you have better than even chances. The question is therefore whether you're happy to carry on with the full amount at stake.