He later joined the New South Wales Police Force, serving initially as a general duties officer and then as a detective; serving for a total of 12 years in the majority around Taree and surrounding districts.
Whilst working as a police officer, Bromhead studied law by correspondence and was admitted as a solicitor.
[2][3] Bromhead had served as a Councillor on the Greater Taree City Council and had extensive community involvement including local rugby union football clubs, tourism associations, chambers of commerce, and horse racing clubs.
During the last two weeks of the election campaign, Bromhead was involved in a motor vehicle accident where it was reported that he fractured his leg.
In October 2022, Bromhead announced he would retire and not contest the 2023 New South Wales state election as he had been diagnosed with mesothelioma.