UK Border Agency (UKBA) officers raided a Tesco property and discovered its staff were breaching the terms of their work visas. The UKBA found that foreign nationals were working longer hours than their visas allowed at the South London warehouse, which supplies groceries for online customers. UKBA officers arrested 20 workers who were mostly of Indian and Bangladeshi origin. These people were perfectly legally entitled to work in the UK but could only do so for 20 hours a week.