Unnecessary police procedures

Why do the Police insist that original MOT certificates and Insurance Certificates are to be produced at Police Stations after a motoring offence when the information is available to them electronically via VOSA and DVLA.  In this day and age it should be easy for the Police to access via a remote computer link.

Why is this idea important?

Why do the Police insist that original MOT certificates and Insurance Certificates are to be produced at Police Stations after a motoring offence when the information is available to them electronically via VOSA and DVLA.  In this day and age it should be easy for the Police to access via a remote computer link.