 As result, FS screening has been introduced into England for all at the age of 55. Thus it is offered 5 years before gFOBT screening starts, as this is offered between the ages of 60 and 74. In Scotland, however, the age range for gFOBT screening is 50 to 74, and the main issue surrounding the introduction of FS screening in Scotland is that there is no information regarding the utility of FS in a population that has already been exposed to FOBT screening. 