Amazon's Deliveroo deal put in jeopardy by UK regulator's 'serious concerns'

LONDON (Reuters) - Amazon's purchase of a stake in online food delivery group Deliveroo has been put in doubt by Britain's competition regulator which said it raised "serious competition concerns" for consumers and may require an in-depth investigation.Amazon led a $575 million (£448.17 million) fundraising in Deliveroo in May, making what the two parties called "a minority investment" and pitching it against Uber Eats , Just Eat and Takeaway.com in the global race to dominate the market for..