173.This section limits the ability of the CC to extend its timetable in a case that has been referred back to the UK, where that would conflict with the timetable set by the ECMR. It also provides that the extensions provided for special circumstances and delays in obtaining information can be cumulative, but that multiple extensions for failure to provide information can run concurrently where they overlap. The section also allows the Secretary of State to alter the standard timetable and extension time-periods (but provides that the periods must not be set above 24 weeks and 8 weeks respectively).