TBH you're lucky the signage has been changed - it used to be a "No Entry except buses" and you would've got 3 penalty points for "contravening a No Entry sign" (or something to that effect).
I would consider myself unlucky an explicit no entry except buses would have definitely made me stop, but that's theoretical at this point.
Your defence on both your PCNs seems to be relying on "I wasn't looking where I was going and I can't read traffic signs". I'd suggest you look for a technicality on the actual PCN notices instead and open your eyes a bit more when driving!
Thanks, reality is that Google maps saved me from this near Westcombe Hill previously, it knows the times when entry is permitted there. In this instance I was following the route previously shown by gmaps manually and got caught in the window by 15 minutes, is there any grace/defence there for this?
For Rochester Way, it was my first time there and I was exploring the area without gmaps which I deeply regret now.
Any suggestions what "technicality" I could find on the PCNs, I attached them in the first post of this thread. Appreciate help.
Whether it's a red/white No Entry with an "Except Buses" plate or a cars/motorcycles prohibited circle, it's a no entry for cars - it's just been decriminalised and become a civil offence.
With regard to Google Maps - who says the data is correct? There are signs & lines on the streets for a reason - because they're the rules. Look where you're driving & be aware of your surroundings.
I'm sorry to moan, but I live locally & driving just according to your phone (or not at all!) is downright dangerous.