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Twiggy helped put the UK industry on the global map.
More than 400 figures from the UK fashion industry have signed an open letter to the prime minister warning that post-Brexit red tape and travel restrictions threaten their survival.
Signatories, including Twiggy and Katharine Hamnett, say some firms are already relocating to the EU.
They say the sector is worth £35bn to the UK and employs one million people.
“Yet we have been disregarded in this deal and our concerns overlooked,” the letter to Boris Johnson says.
The letter, to be presented on Tuesday morning, calls for a meeting with ministers because “without urgent attention these issues will jeopardise the immediate and long term future of the sector”.
They said the…