Failure to follow the new rules will lead to a fine of up to £100, which will reduce to £50 if paid promptly
The masks feature designs by British fashion houses including Mulberry, Julien Macdonald, Halpern and Rixo
It comes a month after Iceland founder and executive chairman Malcolm Walker and CEO Tarsem Dhaliwal took full ownership of the frozen food chain
MD Richard Walker on cutting waste – and plastic – in the crisis
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