A ban on the use of steel string guitars in British jails has been lifted due in part to an initiative led by guitarist/songwriter Billy Bragg. According to Uncut:
The campaign was also led by Cardiff West MP Kevin Brennan … Musicians including Radiohead’s Ed O’Brien and Philip Selway, Elbow’s Guy Garvey, Pink Floyd’s David Gilmour and Johnny Marr also supported the campaign to overturn the ban.
And Bragg himself notes:
As an incentive to engage in rehabilitation individual access to steel strung guitars can really help the atmosphere on a prison wing.
Read more at Uncut.