The hospital has its origins in the infirmary built to support the Romford Union Workhouse in 1893.

[1] Hospital Radio services at Oldchurch began in 1985, when volunteers of Radio Rush Green established a link using a landline from the studio at Rush Green Hospital, Dagenham to the patients' bedside radio system at Oldchurch Hospital, Romford.

[5] Hospital Radio 174 took its unusual name from the London Transport Bus Route 174 which runs between Rush Green and Oldchurch.

The station was granted a low powered AM licence from Ofcom and installed a Induction Loop AM transmitter system across Oldchurch Hospital broadcasting on 846Khz (AM), with the Hospital Radio 174 re-branding as Oldchurch Radio in October 1996.

[5] Bedrock became a registered charity in October of 2002 retaining studios at Oldchurch Hospital broadcasting on 846AM,[6] with a dedicated landline link to the radio system at Harold Wood Hospital.