Don’t miss this week on the BBC
New series Caribbean With Simon Reeve (8.00pm, Sundays, BBC Two) looks at the culture and economic disparities in the region. India’s Frontier Railways (9.00pm, Thursday 26 March, BBC Four) follows the characters who work on and use the Samjhauta Express which crosses between Pakistan and India. File on 4 (8.00pm, Tuesday 24 March, Radio 4) examines the controls being used to prevent would-be terrorists getting access to illegal firearms in the UK. John Humphrys reports the final film in Panorama’s What Britain Wants (8.30pm, Monday 23 March, BBC One) and at what defines good life in modern Britain.