However, she said she was encouraged by the introduction of a new mental health crisis line for police officers and staff.
In a statement, Thames Valley Police said it recognised that policing was a “demanding and often emotionally challenging profession”.
“Supporting the mental health and wellbeing of our officers is a priority, and we are committed to providing the right support at the right time,” a spokesperson said.
“Officers have access to a wide range of services, including occupational health, post-incident trauma support, staff support networks, mentoring, line manager and tutor support, and our multi-faith chaplaincy.
“We continue to invest in these resources to ensure they meet the needs of our workforce.”
The Home Office has also been approached for comment.