Primark are investigating an incident in which a shopper discovered a label that read "Forced to work exhausting hours" stitched inside a £10 ($16) dress she had bought from one of the retailer's outlets.

Rebecca Gallagher, 25, has vowed never to wear the dress she purchased in Swansea over fears it was the result of exploitative working conditions. 

"You hear all sorts of stories about people working in sweatshops abroad — it made me feel so guilty that I can never wear that dress again," she told....