Momentai plc more than doubled net profit to £660,000 (e 938,00-$1,068,000) in the 12 months ended March 31 from £316,000 in the previous fiscal year. Sales rose 8.7 percent to £13,989,000 (e19.87m-$22.63m). Operating income grew by 68.7 percent to £847,000 (e599,000-$682,000) from £502,000. Momentai is a UK firm that owns the Crown Eyeglass chain of 47 optical stores in the UK, the 17-door Direkt Optik chain in Sweden and Readyspex, a supplier of ready-made reading glasses. The stores are directly supplied by the group's prescription laboratory in Blackburn, England.