You asked
Please can you provide the statistics for the pass rate for GCSE maths RESITS for 16-19 year olds in the UK in the last academic year 2014/5, or advise how to obtain reliable data?
We said
Thank you for your request. I can confirm that the requested information is not held by the Office for National Statistics. We suggest that you contact the Department for Education to see what they are able to supply.
https://www.gov.uk/government/collections/statistics-gcses-key-stage-4