FT.com - UK Equities...Hays stacks up gains on the back of bid speculation ...Wider market reversed opening losses, with the FTSE 100 ending less than 10 points away from its four-month high...Legal battle over spill still wide open...BP's self-confessed failings over the Gulf of Mexico disaster strengthen the hands of people suing the company while still leaving wide scope for arguments about its total culpability, legal experts say...BP shares out thunder for its perfect storm...The UK group's internal inquiry reveals a combination of mistakes, mechanical failures and design faults that led to the accident on April 20 in the Gulf of Mexico...Backlash greets BP's internal report...BP's internal inquiry into the causes of the disastrous oil spill in the Gulf of Mexico provoked an immediate backlash from its contractors on the rig and US politicians who dismissed it as "not BP's mea culpa"...Barratt narrows losses for full year...The housebuilder makes a strong start to the crucial autumn selling season, but cautions that the lack of mortgage availability remains a significant hurdle to recovery in the market...Goldman veteran to join Glaxo as finance chief...Simon Dingemans is leaving the bank to join drugmaker GlaxoSmith-Kline as chief financial officer at a time when global mergers and acquisitions activity is starting to heat up...Vodafone loses $2bn India tax challenge...A High Court decision to tax Vodafone for the 2007 acquisition of Hutchison Essar could hurt cross-border dealmaking in India...Investors unmoved by Dana defence...Dana Petroleum's shares remain stuck around £18, the price offered by hostile bidder Korea National Oil Corps, in spite of the publication of a defence document by the Aberdeen-based oil and gas explorer that argues it is worth between £21.10 and £24.65...BP set to reveal findings of oil rig probe...BP will give its first full account of the causes of the Deepwater Horizon disaster, and is expected to say that there were failures committed by BP but also by other companies involved in drilling the Macondo well...DS Smith plans change in pension policy...The packaging supplier and office products wholesaler says recovery in demand continues, but it is also pushing ahead with the closing of its final salary scheme...Abcam lifts dividend by 65%...The producer and distributor of research grade antibodies increases pre-tax profits by 58% to £25.8m for the year to June 30 and is proposing a five-for-one share split...Varley to retain advisory role...John Varley, who has long had a private plan to stand down as chief executive of Barclays, will stay on as a senior adviser on regulatory matters until next September...Vodafone selling China Mobile stake for £4.3bn...Vodafone has agreed to sell its entire stake to banks led by Goldman Sachs, Morgan Stanley and UBS, who will in turn sell the shares on to institutional investors...Bid talk lifts Invensys out of relegation zone ...With defensive stocks in favour the FTSE 100 breaks seven-day winning streak ...GM picks derivatives manager...GlobeOp Financial Services to help the US carmaker manage daily collateral management, and valuations of foreign exchange, commodity and interest rate derivatives...