Hi everyone. Thank you for your advice. As I see most people not come back to these threads I thought I'd post my outcome.
Just for clarity, yes I had managed to pay the fine without nominating the driver first, West Mercia have it all in one letter, not sure if that is the norm.
I submitted my plea using the gov website. I pleaded guilty to the speeding (ticked the box that said Guilty I would not like to attend court). For the failure to notify I pled not guilty (Not guilty send me a court date). This was mid March. 2 days later the fine I paid got refunded to my bank account.
When submitting my not guilty plea I submitted screenshots of me writing to the camera ticket office etc and just explained what had happened.
Friday just gone (12/04) I received an email with the outcome of my guilty plea. I received a fine of £181, victim surcharge of £72 and costs of £90 so £343.00 to pay total & 3 points. The email did not contain any information about the second charge.
Been away all weekend and got back today to a letter from the magistrates court. It reiterated the amount to pay for the speeding charge and then under the 2nd charge DVLA code MS90 it says the offence has been withdrawn.
So I never had to go to court.