Six4Three is involved in court action against Facebook, where the documents were obtained through USA legal mechanisms.
The documents include the details of Facebook's chain of events that caused the Cambridge Analytica scandal, including emails between executives and conversations with Zuckerberg.
In a waspish reply to Facebook's European public policy chief, Richard Allan, Damian Collins pointed out that "as a member of Parliament yourself" he should be familiar with its powers to order the production of documents and publish them with the protection of parliamentary privilege.
"We have asked the DCMS committee to refrain from reviewing them and to return them to counsel or to Facebook". When he failed to do so, he was escorted to Parliament where he was informed he faced heavy fines and even imprisonment for not complying.
The move came from Conservative MP Damian Collins, who reportedly invoked "a rare parliamentary mechanism" to force the disclosure while Zuckerberg was staying at a London hotel.
The committee obtained the files from Theodore Kramer, CEO of app maker Six4Three, after they discovered he was in London, threatening him with prison if he refused.
Facebook has stumbled from one mess to another this year as it grapples with continuing fallout from Russia's use of the platform to interfere in the 2016 U.S. presidential election.
Fernando Alonso and NASCAR racer Jimmie Johnson seat swap
Thankfully, though, there has been no sight of those ubiquitous Alonso facemasks. I'm shier than people think and I want it go by quickly.
"We've failed to get answers from Facebook and we believe the documents contain information of very high public interest", Collins was quoted as saying.
A British lawmaker took the unusually aggressive move of forcing a visiting tech executive to turn over the files ahead of an global hearing that parliament is hosting on Tuesday to look into disinformation and "fake news", Facebook said in a statement.
The UK Parliment has confiscated all the internal documents of Facebook in an investigation to answer the privacy concerns around the social network.
"We have followed this court case in America and we believed these documents contained answers to some of the questions we have been seeking about the use of data, especially by external developers".
For two years Facebook has been rocked by crises involving covert Russian propaganda, the mishandling of millions of users' personal information and the hiring of a public relations firm that had what one former employee called an "in-house fake news shop".
Mr Allan is actually Lord Allan, a former Liberal Democrat MP given a peerage by Nick Clegg, who in a unusual turn of events has now become Facebook's global public-relations and policy chief. "We have no further comment".