Dunelm shares crashed after its new boss unveiled plans to cut £100million in costs as heatwaves deterred shoppers from spending on their homes.

The homewares giant has insisted it will stock more products to help consumers cope with the scorching temperatures next summer as it unveiled a wider shake-up.

Shares fell 11 per cent on Tuesday afternoon after the group said it saw ‘significantly softer trading’ in the first six weeks of its current financial year, which started on June 28, due to consumers finding it too hot to shop.

Chief executive Clo Moriarty said there had been ‘undoubtedly unmet demand’ for heatwave essentials such as air-conditioning units and fans, which the business ‘could have sold multiple times over.’

The business will also look at its ranges of garden furniture and thin bedding as Britain grapples with increasingly warm summers.