Retail giant IKEA said sales in the final four months of 2014 were up in double-digits with mattress sales a key growth driver.

The UK’s largest home furnishings retailer said sales of mattresses — which it now sells in standard UK sizes as well as in European variations — were up over 40 per cent on the same period a year earlier.

Store sales over the 16 weeks to end December climbed 9 per cent with Internet sales rising 34 per cent. Bathrooms (+19pc), Living Room (+9.1pc) and Kitchen and Dining (+9.4pc) were other growth categories.

The retailer said knocking £55 off the price of its Friheten corner sofa-bed had a major impact, with the now £395 line increasing sales by 130 per cent to become its strongest performing product during the period.

IKEA added that growth in its sales period — from Boxing Day to 6th December — had been slightly softer, rising 5.5 per cent with online sales up 14 per cent and store sales by 4.5 per cent.