Officers from the Hemel Hempstead Safer Neighbourhood Team will be out in force in the town centre to raise awareness of safe cycling and crime prevention.
A Cycle Safe event will be held on Wednesday, November 14 between 2.30pm and 4.30pm, giving people the opportunity to have their bicycles marked for free.
Security marking involves putting a postcode and house number on the bike by engraving and protecting it with a lacquer varnish.
Alternatively, bikes can be marked using a UV pen.