All sorts of stuff on John Clare online, as listed below (click on the links):
BBC World Service (1991) ‘Omnibus: John Clare’
Ted Hughes reads John Clare ‘Nightingale’s Nest’, Westminster Abbey (1993)
BBC Radio 4 Programme (2004) ‘Open Country’
BBC Radio 4 Programme (2008) ‘John Clare The Lament of Swordy Well’
BBC Radio 4 Programme (2018) ‘In Our Time: John Clare’
BBC Radio 4 (2015) ‘Great Lives: John Clare’
Happy listening!