Free Traffic Legal Advice

I was also not the driver at the time of the offence.

Then you plead not guilty to the speeding.  (The s172 offences are the concern as they carry 6 points each if convicted)

Both offences are generally 'dual-listed' to give you the opportunity to offer to plead guilty to the speeding if they drop the more serious charges.  (But you can only do that if you were driving)

The vehicle is registered in my name and at my current address.

How about in November when the Police queried the DVLA?

Dig out the V5 and double-check the address is 100% correct.  Also, check the DOCREF date (At the bottom of page 2 in DD MM YY format) that records when the DVLA last updated that V5.

Both offences were within 2 minutes of each other on the same stretch of road, will they count as 1 offence or 2 seperate ones?

The speeding offences are of no concern to you as you were not driving.

Apart from pleading guilty, your only option is to defend the “Fail to Provide” charges. The police have only to prove that the requests were posted to your last known address (as held by the DVLA) and they are presumed to have been “served” two working days after posting. Your task will be to convince the court that they were not. You must do this “on the balance of probabilities” (i.e. more likely than not).

It is  a notoriously difficult task as you have to prove that something did not happen.