Security giant G4S fell after expressing disappointment over the problems related to its Olympics contract, saying that it will incur a 50m pound loss on the contract in the first half. Meanwhile, the company said that a restructuring of its overhead structure will lead the loss of 1,100 jobs. Nevertheless, the firm revealed that turnover at constant exchange rates rose 7.5 per cent during the six month period, while profits were flat. B&Q owner Kingfisher was another big faller after Bank of America Merrill Lunch downgraded its rating on the stock to 'underperform'. Miners were firmly out of favour on concerns over the Japanese economy. BHP Billiton fell after announcing the sale of its Yeelirrie uranium deposit in Western Australia to Cameco for $430m. BHP and sector peers ENRC, Kazakhmys and Vedanta were also lower after Morgan Stanley reduced its target price for all four stocks. Drugs giant AstraZeneca was lower after saying that it has appointed Roche's Chief Operating Officer as its new Chief Executive Officer. Meanwhile, the firm also announced that the European Commission has granted marketing authorisation to its ZINFORO treatment. Sector peer GlaxoSmithKline was suffering from a downgrade by UBS. Meanwhile, both Glencore and Xstrata were moving higher after sources close to the transaction told The Sunday Telegraph that Qatar Holding has assured Xstrata's Chief Executive Mick Davis that he will have their full backing should shareholders block the tie-up with Glencore, a move that would send the miner's share price plummeting. FTSE 100 - RisersCarnival (CCL) 2,159.00p +3.20%International Consolidated Airlines Group SA (CDI) (IAG) 144.70p +2.33%BT Group (BT.A) 218.50p +1.53%Capital Shopping Centres Group (CSCG) 333.60p +1.43%ITV (ITV) 84.55p +1.20%CRH (CRH) 1,143.00p +1.06%Xstrata (XTA) 937.30p +1.03%Barclays (BARC) 189.05p +0.99%Glencore International (GLEN) 370.45p +0.98%Royal Bank of Scotland Group (RBS) 224.70p +0.81%FTSE 100 - FallersEurasian Natural Resources Corp. (ENRC) 322.70p -4.78%Kazakhmys (KAZ) 631.50p -4.39%Evraz (EVR) 236.10p -4.34%Kingfisher (KGF) 274.60p -3.89%Vedanta Resources (VED) 897.50p -2.92%Hargreaves Lansdown (HL.) 603.00p -2.66%Marks & Spencer Group (MKS) 362.10p -2.58%Rio Tinto (RIO) 2,849.50p -2.08%G4S (GFS) 261.60p -1.73%InterContinental Hotels Group (IHG) 1,590.00p -1.61%NR