As you're at the Charge Certificate stage, having not received the postal PCN for this moving traffic offence, you now have to wait until they register the debt at the Traffic Enforcement Centre, and send you an Order for Recovery (OfR), by post. As you've missed a postal PCN, it seems there may be postal problems, hence the need to check the address on the V5 Registration Certificate for accuracy.
At the OfR stage, you can submit a Statutory Declaration that you didn't receive the PCN. The matter will then be reverted to the PCN stage, at which point you can submit representations, or pay it.
GSV for the approach to this street shows not just a No Right Turn sign, but also, a short distance in advance of it, a warning sign as well, which is unusual. However, it would make it harder to say "I didn't see the sign" This advance sign has, I suspect, been put up because the frequent bus traffic would often tend to obscure the sign.
https://maps.app.goo.gl/yZBmhG6ng2Reekit6Once the period for payment of the Charge Certificate has expired, you need to be proactive, and make regular enquiries whether the PCN debt has been registered. If you look at the council web site, you should be able to see the current status of the PCN. When the amount owing is £10 larger than the CC amount, it means the debt has been registered. The £10 is the TEC registration fee. At this point you can download the form from TEC for the Statutory Declaration, fill it in, and submit it, even though you may not have received the OfR in the post.