About RAJAR -
Key Facts
There are currently about 310 individual stations measured on RAJAR, including 55 BBC stations.
The results are published every quarter for all the stations.
Due to the complexity of the UK radio map, RAJAR interviews approximately 130,000 adults 15+ per year (plus roughly 5,000 children 4-14) over 50 weeks. The Christmas and New Year holiday period is excluded from fieldwork.
The survey operates as a sweep, not a panel, which means that respondents only participate for one week. They are asked to complete a one week diary showing all the stations they listened to, for at least 5 minutes, recorded in quarter hour time blocks.
Top line results, i.e. weekly reach and hours per station, are made available to the public free of charge. Access to more detailed information, such as audience per time-band, is only available to subscribers.
