Trojan retired in 2019 due to health issues after five and a half years with Thames Valley Police.
A panel rules Mark Pattison's affair with a junior colleague amounts to gross misconduct.
Nicholas Peel was jailed thanks to the "courage and conviction" of his victim, police said.
Thames Valley Police says it was called to the incident in East Hendred at 07:20 BST on Thursday.
Former PC Jordan Foulkes is barred from policing following a misconduct hearing.
Kimberley Cameron died following a collision while crossing a road in April 2021, police say.
PC Sean Clayton-Chance is accused of pointing his body-worn camera away from the suspect.
PCs Morgan Llewellyn and Owain Soady-Jackson tackled a man with a machete in Oxford last year.
Thames Valley Police said a food delivery bag on the moped was found packed with bags of cannabis.
