Who receives itOne national portal collects driving-offence footage from dash, helmet and house-mounted cameras, then passes each upload to whichever force covers that road. Anything filmed in Hull or the East Riding lands with Humberside Police.
Fourteen days, and no more timePast the date, picture quality is worth nothing. For a range of offences the registered keeper has to have the notice of intended prosecution within fourteen days. Humberside Police sets its own submission cut-off earlier again, so read it before you upload.
What you have to doHave the registration of the other vehicle ready. What happened goes into a signed witness statement, and you might be called to give evidence in person. The footage shows what it shows; you are the one standing behind it.
Bodycams worn at workA body-worn camera pointed at identifiable people collects personal data, and UK GDPR governs it. Expect to show a lawful basis, signage wherever signage can go, a retention period you can account for, and storage that is locked down. Evidence handling follows CCTV: original kept, copies hashed, hand-offs logged.