Engineer Tomkins has motored ahead after it confirmed it has received a bid approach from a Canadian consortium worth 325p a share in cash.Toronto-based private equity Onex Corporation and the Canada Pension Plan Investment Board have been allowed a look at the books and due diligence on the company is now at an advanced stage.Industrial conveyor belt maker Fenner was also wanted after saying it is comfortably meeting expectations with revenue and underlying operating profit in the third quarter well ahead of the comparable period last yearAquarius Platinum has continued losing lustre after the South African government ordered root and branch changes to mine construction after a spate of fatal accidents. The shares had already fallen on Friday.Investors have focused on the negatives in SThree's results. The recruiter said half year pre-tax profit fell sharply but remains cautiously optimistic in an improving but not yet fully recovered marketFTSE 250 - RisersTomkins (TOMK) 302.80p +31.48%Fenner (FENR) 226.70p +5.05%Gartmore Group (GRT) 108.30p +5.04%Telecity Group (TCY) 430.70p +2.55%Premier Oil (PMO) 1,485.00p +2.41%Kier Group (KIE) 1,031.00p +2.38%Promethean World (PRW) 167.00p +2.14%London Stock Exchange Group (LSE) 636.00p +2.09%Impax Environmental Markets (IEM) 112.30p +2.09%Spectris (SXS) 909.50p +2.02%FTSE 250 - FallersAquarius Platinum Ltd. (AQP) 223.30p -12.77%SThree (STHR) 274.30p -6.38%Gem Diamonds (GEMD) 211.70p -4.21%Redrow (RDW) 99.95p -4.08%Rightmove (RMV) 609.50p -3.25%Hansen Transmissions International (HSN) 67.90p -3.14%Taylor Wimpey (TW.) 25.35p -2.84%Barratt Developments (BDEV) 96.60p -2.72%Mcbride (MCB) 140.90p -2.63%RIT Capital Partners (RCP) 1,173.00p -2.49%