In November 2017, Money Advice Service found that in a survey of 2,086 UK working age adults who took a numeracy assessment, 45% were found to have poor or low numeracy levels. [ref: Adult Numeracy and Financial Literacy] link
On 16th May 2018, KPMG announced a YouGov online poll of 11,012 adults. 37% had felt stressed about everyday tasks involving numeracy and 45% admit to struggling with these tasks.
In March 2018, Shirley Conran commissioned The Langley Park Schools Survey, an in-depth survey of 2,000 pupils in two schools with excellent maths exam results. It reported the following:
Around 25% of the boys and 25% of the girl students have Maths Anxiety.
An additional 15% said that they experience Maths Anxiety sometimes.
For the full report of the Langley Park School survey use this link.