The study will assess whether the deal could reduce competition and choice for shoppers and stores.
One of the affected models led to a mother's death last year, but the alert relates to a separate issue.
Many passengers take to social media to complain they are yet to be reunited with their bags.
The airline says fares will fall by up to 7% this year as it reports a record annual profit.
Thousands of small firms are still waiting for the government's promised help on business rates.
China's ex-table tennis world champion Kong Linghui allegedly owes Singapore casino about $330,000.
Akzo Nobel, which has rejected three takeover offers, has seen off a shareholder rebellion in court.
Shares in British Airways owner IAG slide as investors react to the weekend's IT failure.
Greece "desperately needs" the next bit of its multi-billion-dollar bailout, says its finance minister.
The RBS Shareholders Action Group is recommending that its members accept a settlement of 82p a share.
The Conservatives have been criticised by other parties for not doing more to help women affected by changes to pension policy.
Researchers say the WannaCry ransom note was poorly translated - possibly using Google Translate.
Police caught 200 drivers a day using their devices while driving in the four weeks after 1 March.
Bank of Scotland says its new £10 polymer note is due to enter circulation in the autumn.
Security chief John Kelly says terrorists are obsessed with the idea of attacking a US plane.
What strange questions have you been asked in a job interview?
Timpson CEO John Timpson says trust your staff to take the initiative.
The government should create incentives to boost self-employment says Simon Belsham, of online marketplace Notonthehighstreet.
The UK should toughen the laws on bankruptcy, says garage owner Julie Jordan-Spence
Alex Cruz also said he had been communicating with passengers over social media.
Steph McGovern looks at why levels of home ownership and renting have been changing.
Pioneering businesswoman Martha Tilaar tells the BBC how she started her business despite all the odds in 1970s Indonesia.
Sri Lanka is allowing Chinese firms to take over key assets, as it struggles to repay loans it was given by China.
The large billboard-type display was apparently defaced by hackers on the Bank Holiday.
The advert asks people to choose between Belgium's king and the company mascot.
Ever had a job interview that seemed to have nothing to do with your ability to do the job?
More countries are using internet voting for elections. But does it encourage more people to vote - and is it safe?
There are EU regulations governing compensation for cancelled flights leaving from EU airports.
With half a million tenants now having to borrow to pay the rent, what are the parties promising?
More than half of women going back to work after a career break go into lower paid roles. Are "returnships" the answer?
Why is this highly successful mass transit system so underrated?
Failure saw most services cancelled from Heathrow and Gatwick, with disruption set to continue through Bank Holiday.
The little-known tale of when the British inspired sports entrepreneurs to launch a football league in America.
Labour, the Liberal Democrats and the SNP have called for employment tribunal fees to be scrapped.