Have Britain's prisons become 'warehouses for radicalisation'?

Prisons have become "warehouses for radicalisation" where offenders are learning from a "university of crime" rather than being rehabilitated, the Mayor of London has warned.

Sadiq Khan called on the Government to give jails resources and support to properly punish and reform those convicted of a serious offence as well as handing judges the power to pass sentences which would keep dangerous terrorists behind bars.

At present most offenders handed an immediate jail term are typically released halfway through their sentence on licence under rules introduced in 2005.

Mr Khan said he was angry that there had been two attacks in London by convicted terrorists, adding:

Today Boris Johnson indicated again that he was planning far-reaching reform of the sentencing of terrorists.

Boris Johnson had already promised reform to ensure serious terror offenders served their whole sentences, after London Bridge killer Usman Khan's attack was carried out while he was out on licence from prison.

However, the changes would not have applied to the Streatham attacker, who had been convicted of the less serious offence of possessing and distributing terrorist material.