The NHS complaints regulations say complaints should be made within 12 months of the date on which the matter occurred, or from when the complainant first knew about the matter; the GDC expects private practices to adopt similar standards.
However, it's still advisable to consider complaints made outside the time limit if it is possible to investigate them fairly and effectively. If relevant information is no longer available, consider what steps, if any, can reasonably be taken to resolve the complaint.
This page was correct at publication on 22/08/2016. Any guidance is intended as general guidance for members only. If you are a member and need specific advice relating to your own circumstances, please contact one of our advisers.