A 23-year-old man has been charged and released on bail after an alleged assault on Sunday, police said today.
The incident happened in Farland Road, Adeyfield, Hemel Hempstead shortly after 6.15am.
An argument broke out between two men before one of them was allegedly assaulted.
The 23-year-old, from Hainault, Essex, has been charged with wounding with intent to cause grievous bodily harm.
He has been bailed to appear before Harrow Crown Court on October 16.
Police are now appealing for anyone who was in the area at the time and saw what happened, or has any other information about the incident.
Anyone with information is asked to contact Detective Sergeant Ben Freeman on the non-emergency number 101.
Alternatively, you can contact Crimestoppers anonymously on 0800 555 111 or through their Anonymous Online Form at www.crimestoppers-uk.org.
No personal details are taken, information cannot be traced or recorded and you will never need to go to court.