In a statement this afternoon, the Foreign Ministry said any incident of "interception of communications" is "contrary to international law".
At the instigation of Foreign Minister Westerwelle, the British ambassador was asked to an interview in the Foreign Office.
The head of the European Department asked for a response to current reports in the British media, and pointed out that the interception of communications from the premises of a diplomatic mission would be behaviour contrary to international law.
More top news
The Late Late Show host also allowed the singer to take the wheel in a Carpool Karaoke first.
The lender, which is the worst affected by the PPI mis-selling scandal, said it has also set aside £150m for other conduct issues.
Vodafone has been fined £4.6 million by the industry regulator for "serious and sustained" breaches of consumer protection rules.