The sales data for the NBF Tracker is collected quarterly and is based on data supplied by members, of sales of member products – ie mattresses, bed sets, bases, bedsteads, sofa beds, headboards etc.
UK estimates for headline figures are provided, based on the number of members submissions we receive. Where we receive a full compliment of submissions from members, we base the estimated headline figures on NBF members representing 50% of UK manufacturing output by units and 70% by value. Based on the actual number of submissions we receive, we adjust the calculations accordingly to arrive at our top line estimates for the total UK market.
Please note: All reports dated prior to Full Year 2018 were calculated on NBF members representing c.70% by units and value.