Temporary power and temperature control group Aggreko rose strongly after it gave an in-line trading update and said it continued to expect 2014 underlying trading profits to resemble those of 2013.Tesco traded higher after HSBC analysts upgraded their rating to 'overweight' from 'neutral'. This followed Monday's upgrade by Sanford C. Bernstein from 'market perform' to 'outperform'.SABMiller retreated from the previous day's gains which came after it said operating profits would have risen by 3% when adjusted for currency movements.Petrofac climbed after Investec reiterated its 'buy' rating.FTSE 100 - RisersAggreko (AGK) 1,593.00p +3.31%Petrofac Ltd. (PFC) 1,150.00p +2.40%Burberry Group (BRBY) 1,562.00p +1.96%Aberdeen Asset Management (ADN) 440.30p +1.85%Tesco (TSCO) 194.60p +1.80%Kingfisher (KGF) 296.50p +1.61%Standard Life (SL.) 408.00p +1.59%BG Group (BG.) 1,044.50p +1.56%Morrison (Wm) Supermarkets (MRW) 179.30p +1.41%Royal Dutch Shell 'A' (RDSA) 2,205.50p +1.36%FTSE 100 - FallersIntertek Group (ITRK) 2,664.00p -2.70%AstraZeneca (AZN) 4,651.00p -1.71%SABMiller (SAB) 3,496.50p -1.65%Weir Group (WEIR) 2,128.00p -1.25%CRH (CRH) 1,353.00p -1.10%Smith & Nephew (SN.) 1,056.00p -1.03%Marks & Spencer Group (MKS) 467.90p -0.97%Imperial Tobacco Group (IMT) 2,849.00p -0.94%Centrica (CNA) 297.80p -0.93%Dixons Carphone (DC.) 410.00p -0.85%