A counter offer for BG Group looks unlikely, according to Canaccord Genuity, which downgraded its rating on the natural gas company from 'buy' to 'hold' after Wednesday's takeover offer by Royal Dutch Shell.Analyst Richard Griffith said: "We cut our recommendation from 'buy' to 'hold' and would only subscribe to remaining buyers of BG in the event of a counter offer which we believe seems unlikely looking at the current share price trading at a discount to the deal metric value."Experian shares received a boost on Wednesday by Credit Suisse which lifted its stance on the information services and credit checking group from 'neutral' to 'outperform' and hiked its target price from 1,100p to 1,300p."The combination of accelerating organic growth, an on-going buyback scheme, prodigious cash generation and optimised balance sheet will drive a re-rating in our view," the bank said.Numis Securities has lowered its recommendation for Tate & Lyle from 'hold' to 'reduce', saying there is "little to excite" investors of the sweeteners and sugar group."There is a possible 20.2p final dividend in late May that may attract the attention of income funds. However, aside from this income, and the chance that tough actions on Sucralose will prove a modest plus for sentiment, there seems little here to excite," the broker said.