Harpreet Aulakh, 31, will appear before London's Feltham Magistrates' Court next week charged with murder.
Mrs Aulakh, 28, was found with fatal head injuries and her hand severed after being attacked in Greenford, north-west London on November 16.
Mrs Aulakh was attacked at about 7pm. She was walking to pick up her two sons aged eight and ten after leaving work at Sunrise Radio where she was a receptionist.
Her family have since described how they are living in a "nightmare" from which they cannot wake up.
They said Mrs Aulakh was preparing to divorce her husband of 11 years.
The second man arrested yesterday has been bailed to a west London police station on a date in mid-January.