The competition authority said the two must ensure the independence of the LSE's clearing services, LCH.
The cost of buying groceries in Jersey and Guernsey is to be investigated by the competition authority.
Mexico's competition authority has issued a non-binding opinion against it, and the government's regulatory commission seems unconvinced.
It also added that the French competition authority is looking into the deal and is finalising its analysis.
BBC: Eurotunnel purchase of Sea France ferries faces inquiry
Ofcom is the independent regulator and competition authority for the UK communications industries.
The firm's takeover of Harcourt has yet to clear Britain's competition authority.
Yet the actions of a country's competition authority can affect foreign companies' ability to enter its market, or spill over into other countries' markets.
The Competition Authority safeguards against unfair competition in the press sector.
The corrupt authoritarianism of Alberto Fujimori, its president from 1990 to 2000, undermined many of the country's institutions, but Mr Fujimori did create an effective competition authority.
The UK government's trading and competition authority, the Office of Fair Trading, last week ruled that debit card surcharges must be included in the headline price of flights.
The joint venture discussions are likely to take up to three months to complete and any proposal would be subject to approval by the Republic of Ireland's Competition Authority.
Italy's previous big recession, in 1992-93, prompted a wave of reforms: privatisations, changes to pension entitlements, the creation of a competition authority and the demise of the scala mobile.
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The Jersey Competition Regulatory Authority (JCRA) has outlined plans for Jersey Post to face more competition.
BBC: Plans outlined for Jersey Post to have more competition
Draft delivery targets for mail have been set for Jersey and Guernsey Post by the Channel Islands Competition Regulatory Authority (CICRA).
BBC: CICRA sets delivery targets for Jersey and Guernsey Post
This is the bill to create the UK Green Investment Bank, reshape employment law and replace the Competition Commission and the Office of Fair Trading with a new Competition and Markets Authority.
The revised code has been brought in to halt what critics see is unfair competition by local authority newspapers, and contains specific guidance on the content and appearance of local authority publicity.
For his part, Mr Van Miert has strengthened his remit as Europe's competition commissioner and assured himself continuing authority to consider whether France is keeping its side of the bargain.
We can't know who the winners from Asia-Pacific's inevitable rebound will be, but surely legitimacy of authority will matter in that competition.
Mr Zielonka's model would work more smoothly if there were an outside guarantor of free trade and competition, especially if perceived to have divine authority.
The Great British Garden Competition has been organised by the Olympic Delivery Authority with the Royal Horticultural Society (RHS), which runs the annual Chelsea Flower Show.
Foster is the founder of the London-based Foster and Partners architecture company which has recently won a competition to build Virgin Galactic's New Mexico Spaceport Authority Building for space tourism.
The Corporation of London, the Square Mile's local authority, wants more tall buildings because it fears competition from rival financial districts and not just Frankfurt and Paris.
He has sensible, if incremental, ideas about encouraging competition in the managed-care component of Medicare, and about giving Medicare administrators the authority to negotiate bulk discounts.
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And while Texas is the lone state where federal regulators have no authority over wholesale energy markets, the report Monday implicating TXU is evidence that competition is not working as it was envisioned.
In fixed-line telecoms, for example, the report shows how the state-owned Telephone Organisation of Thailand and Communications Authority of Thailand have exploited their double role as regulators and operators to the detriment of competition.
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