The phrase "alleged knowledge" is correct and usable in written English.
It can be used in contexts where you want to indicate that the knowledge in question is claimed or supposed but not proven or confirmed.
Example: "The defendant's alleged knowledge of the crime was a key point in the trial."
Alternatives: "purported knowledge" or "claimed knowledge".
Crone and Myler were accused of deliberately misleading the MPs in 2009 and again in 2011 about their alleged knowledge that phone hacking went beyond a single "rogue reporter" at the now-closed Sunday tabloid.
Their alleged knowledge of these activities directly violates their role as fiduciaries to the funds.
You do bet, with a modicum of alleged knowledge.
There he convalesced and came to terms with his career and alleged knowledge of Nazi war crimes.
Although settlements have been reached, it also is important to reiterate that the alleged knowledge of former Penn State employees is not proven, and should not be treated as such.
Instead, like the government, the Press Complaints Commission and the police, the select committee on culture, media and sport had to urgently react to what has already been dubbed a News of the World newsroom apparently "out of control", and with the alleged knowledge of senior executives.
It alleged widespread knowledge of hacking at the NOTW, which contradicts his evidence to MPs.
Its central message was that Miliband's alleged inside knowledge of, and concealment of, the 2008 crash "reignites David Cameron's case that Labour simply is not fit to be trusted with the economy".
The school, which the police said cooperated fully with the investigation, previously denied it had verifiable knowledge of alleged gambling.
To what extent this knowledge is alleged to come from the experience alone will be discussed below (Section 8.5).
During the recording, which Davis had reportedly recorded without her knowledge, Laurie seemed to imply her knowledge of the alleged sexual abuse of Davis by her husband.
