Britain's construction output shrank less than initially was expected in April, adding to signs the economy is reviving after previous year's contraction. The Markit/CIPS Construction Purchasing Managers' Index (PMI) improved to 49.4 in April, up from 47.2 in March, just slightly below the 50 threshold. In the first three months the output of construction sector was one of the weak spot of the economy, and while the economic output itself grew 0.3%, construction shrank 2.5% and knocked 0.2 percentage points off gross domestic product. Latest data is adding to signs that in the second quarter, the growth may accelerate even further.