I don't know if this is correct but it has been suggested that the EU was prepared to let the merger of go through but they only stopped it due to not wanting to alienate UK opinion ahead of the referendum.
What a shame the UK Government and the EU did not object to many of the takeovers in other fields by American or other nationality companies - some of which have permanently removed or changed British, sorry ENGLISH, products;
Cadbury's chocolate sold to Kraft and the flavours have now changed all products (and IMO not for the better),
Boots the Chemist now Italian
Harrods owned by company in Qatar
Selfridges Canadian owned
Fortnum and Mason Canadian owned
Debenhams - sold to Americans who stripped it's assets and sold it....
P&O Ports - now Dubai owned
MG Rover - Chinese
Airports Authority - Spanish owned !
Corus (Steel) up for sale by it's Indian owners
Camelot (lottery) now Canadian
Energy - now French
Jaguar Rover - India
and so on and so on, but sadly neither the UK or the EU has intervened in these sales, I wonder why not? OK, there may be more money overseas but in many cases it has had serious impact on jobs within the UK, once again Kraft said "no redundancies in the UK" and then "200 redundancies as part of a package of improvements".
There are times when the silence from Downing Street says more than any press release......
sorry, I cannot claim credit for this list and normally would NEVER use a resource like this article BUT.........
the list horrified me too