FOI ref: FOI/2022/4596
You asked
I am writing to you because I would like to know what the Average Reading age is in the UK.
We said
Thank you for your enquiry.
Unfortunately, we do not hold data related to the average reading age in the UK.
The Department for Education (DfE) may be better placed to help with your enquiry. They can be contacted at Contact the Department for Education - Contact type - DFE Online Forms.
You may also find helpful information from the Programme for International Student Assessment (PISA) carried out by the Organisation for Economic Cooperation and Development. PISA - PISA (oecd.org)