Is a two-week sample (from the jobs database) sufficient for central units?
Ideally, a time recording system would be used to collect information on central units. Where this is not available, management information on crime types by BCU should be used. If this is not available, activity sampling should be used; however the nature of these units is that two weeks is rarely sufficient to give an accurate impression of the work completed. Most central units will not require detailed Activity Sampling at 15 minute intervals as officers and other staff are often working on longer term cases and operations. As a result the information required is from a greater period of time, but in less detail. Appendices F and G of the ABC Manual of Guidance should help forces to determine the appropriate information for different units. • Do you know which other forces conduct ABC on a rolling programme basis i.e. one BCU each month etc The split is about 50:50. It is largely (but not entirely) the larger forces that use a rolling programme. Forces that use a rolling programme
