The following is a direct extract from the entry criteria for Retained MFS staff:
All rostered staff must attend the station in response to an emergency call within 10 minutes of being notified and they must be available to attend at least 50% of calls. In an effort to maintain adequate standards of fire cover and to equally distribute the work load, staff available to respond to incidents must attend the station at least for 50% of the calls and must attend the incident by riding the appliance at least 50% of attendances at the station. For example, if a station averages 20 calls per month, then all staff will attend the station at least 50% of those calls, ie. 10, and of those 10 calls, staff must attend the actual incident on at least 5 occasions.
Does seem like a long time... although, thinking about it we have 6 minutes to confirm that a page has been recieved.... responding (during the day, especially in these times) has been known to be a lot longer on occasions....