Right... have my notes from training in front of me.
(I am a Special PC but am on suspension at the moment, and have been since March, since was suspended from proper job - teaching - cos of an allegation made by a student... so have to refresh my mind a bit) - That also gives me an excuse for being a stroppy arse!
Options open to a constable in case of Road Traffic Offences are as follows:
1. Do nothing
2. Report for summons
3. Fixed Penalty Scheme
In case of 2., if issued with a summons, all details are recorded by the PC in his notebook, and the offender will be told he has been reported for summons. He will receive the documentation from a local magistrates court and the Police force in whose area the offence took place within 7days. He should receive a receipt from the PC on the scene, but no other documentation at this time.
If this has not happened, I suspect your friend has either been issued with a standard HORT(1) Driver Producer for licence, MOT, and insurance, and/or an Endorsable FPN for the offence SP30 which is exceeding the set speed limit on a public highway.
Indeed I hope it is the former, because a report for summons could mean a much higher fine, and at speeds above 95mph, often results in a 6-12month ban.
Double check with him that it is really a summons with which he has been issued.