Petrofac topped the risers as profits came in above analysts' expectations, albeit towards the bottom of the company's own guidance. Chief executive Ayman Asfari said the company was well positioned to deal with the oil industry's declining prices, as the group ended the year with a record-breaking order backlog of $18.9bn.NMC health was boosted by a higher price target from analysts at Jefferies group, moved from 600p to 800p.Among the fallers was electrical appliances retailer AO World which plummeted 29% after forecasting full-year results "slightly below market expectations" after a harder fourth quarter.Hays was trading lower after warning that despite strong growth in the UK and Ireland, comparatives are challenging. The group said it expected a negative impact on activity levels in the run up to the election. "Following the seasonal uplift in consultant headcount that we saw in January, headcount will remain broadly flat until we have a clear view of any impact the general election may have on activity levels," said chief executive Alistair Cox.Supergroup was in the red after chief financial officer Shaun Wills was issued his marching orders on Wednesday. The group has parted with over half of its executives since Euan Sutherland took over as chief executive. RisersPetrofac Ltd. (PFC) 897.00p +10.06%NMC Health (NMC) 552.00p +6.15%Tullett Prebon (TLPR) 344.10p +2.72%Unite Group (UTG) 544.50p +2.06%Galliford Try (GFRD) 1,483.00p +2.06%Greggs (GRG) 858.00p +1.84%Jimmy Choo (CHOO) 173.00p +1.76%Workspace Group (WKP) 836.00p +1.70%Bovis Homes Group (BVS) 952.00p +1.66%Spire Healthcare Group (SPI) 320.90p +1.61%FallersAO World (AO.) 195.20p -30.53%International Personal Finance (IPF) 431.80p -7.62%Hays (HAS) 150.10p -6.07%Bwin.party Digital Entertainment (BPTY) 86.75p -4.14%Telecom Plus (TEP) 1,092.00p -3.79%Supergroup (SGP) 976.00p -3.75%IMI (IMI) 1,389.00p -3.27%Game Digital (GMD) 256.70p -2.95%Drax Group (DRX) 417.90p -2.79%Interserve (IRV) 557.50p -2.62%