Building materials supplier Ensor said robust progress continued at the group as the second half of the year starts well. Pre-tax profit surged to £404,000 for the six months ended 30 September 2010 compared to £71,000 the year before. Revenue for the period increased to £10.8m from £10m previously. Operating profit jumped 146% to £463,000."All our businesses have contributed to this result. The building productsactivities have held up well in the current climate, as has our roofing toolsbusiness," said Ensor in a company statement.The group has reintroduced an interim dividend of 0.175p per share compared to no payment the time before."The second half of the year has started well, but traditionally our resultshave been affected by a short month in December and weather conditionsimpacting on the building trade," it said."We are also keeping a close watch on the effects of Government spending cuts on the construction market. We feel however that we are well placed to deal with most eventualities," Ensor explained.