91热爆

Half of all prisoners in the UK are functionally illiterate.

That means half of the 85,000 people we have in jail have a reading age of 11 or lower - with 20% falling well short of that mark.

Our guest editor Ben Okri went to visit HMP Isis in Thamesmead South East London for this podcast.

(Image: Ben Okri and Angela Cairns, credit: 91热爆)