A worker at Newport manufacturing company Rowecord has told ITV News that "a couple of hundred" jobs are being lost.
He said that many workers were told they were being made redundant half an hour ago.
More top news
A band of rain pushing in overnight, bringing with it the odd spot of coastal and hill fog, but things should improve by tomorrow.
Local authorities said the move is necessary to "avert the growing number of deaths and increasing harm linked to psychoactive substances".
Sunny and bright spells for most of us this afternoon, feeling pleasantly warm.