There is no "procedure" as such.
The addressee of the NIP is required to name the driver, as NJ has mentioned.
If no NIP was served on the driver or RK within the 14 days, and if this can be proven, then that is a defence to the speeding charge, unless the police could not with reasonable diligence ascertain the RK (or driver's) details in time to serve a NIP within the 14 days, or if some other statutory exception applies (ss. 1&2 RTOA 1988).
Ultimately, it is for the driver to rely on the defence in court, but anyone can write to the police and raise the issue. Whether the police will respond to them or not is another matter.
For the police to use the MIB database would suggest that they had been unable to contact the RK through the (copied overnight) DVLA data on the PNC - e.g. wrong address, returned NKATA. Beyond that, as Mystic Meg and Doris Stokes have now both passed to the other side, we have no idea why this would have happened.
N.B. If, as you protest, this is not your first rodeo, you would presumably know that V5s have not been a thing for many, many years.