“This time the offending instruction is said to have been issued in Cardiff, where Swiss-owned recruitment agency Adecco provides around 300 workers to the Tesco financial services centre in Llanishen.
A memo sent by Adecco to its employees – known as ‘associates’ – at the Tesco centre said,
“In accordance with Tesco policy we would like to remind associates of the need to work with professionalism at all times.
'As Tesco is a successful national company we appreciate your contribution to the business. In order for operations to run smoothly, there is a business need for English to be spoken at all times when you are at work.
“However, at break times associates may speak in their native tongue.'"