Call your examination centre directly if you have not received the results of a GCSE exam you took within the past year. According to GSCE administrator WJEC, test centres are only obligated to hold onto unclaimed certificates for 12 months.
Contact the GCSE administrator through whom you took the exam--either OCR, AQA, CCEA EdExcel or WJEC--if more than a year has passed since you took the exam or you need to obtain a replacement certificate because of damage, theft or loss. You can find links to each of these administrators' webpages under Resources.
Find your results online if you took your exam through EdExcel by logging into the "ResultsPlus Direct" service, a link to which is listed under Resources. If you've forgotten your login credentials, call ResultsPlus customer service at 0844-576-0024.