The two organisations had previously worked in partnership over a number of years in the lead up to the creation of Radio Harrow, sharing broadcasts, volunteers, as well as Trustees and Directors.

In the 44 years of its existence it grew in strength and became one of the first hospital radio stations in the UK to broadcast 24 hours a day and online.

The volunteers visited over 15,000 patients a year to help make their stay in hospital as comfortable and enjoyable as it can be and then broadcast back personalised shows in the form of a daily request show, alongside their regular broadcasting, aimed at entertaining the patients.

With no room for a permanent studio, programmes were only broadcast on Sundays and volunteers installed and dismantled the equipment weekly.

In 1971 a permanent studio was built in the basement of the new Northwick Park Hospital and RNP went on air in April 1971.