Chief operating officer Nicola Thompson said the move is part of “ continued investment into the UK market... supporting our ambitious growth plans for the future and helping us to significantly improve the lead times we offer to customers”.
Thompson added: “We are thrilled to expand our warehousing operations at London Gateway as we respond to continued growth in customer demand for our exclusive designs.”
The latest expansion plan is expected to create up to 100 new jobs.
Sky News reported in February that the company was exploring plans for a stock market flotation that would value it at well over £500 million. Made declined to comment.
Shareholders in the business include Level Equity, Partech Ventures and individual investors such as Hoberman.