See the full article: Britain 'threatens to stop sharing intelligence' with Germany - British intelligence officials have threatened to stop sharing information if Germany presses ahead with a parliamentary inquiry into British and American spying,
See the full article: Britain ‘threatens to stop sharing intelligence’ with Germany – British intelligence officials have threatened to stop sharing information if Germany presses ahead with a parliamentary inquiry into British and American spying, a German news magazine claims (Daily Telegraph, link)
And: German Parliamentary Committee investigating the NSA spying scandal (Wikipedia, link)