Government Requests to Remove Content
transparencyreport.google.com
transparencyreport.google.com
Google's certainly not the search engine it once was, but for the most part it does at least tell you if it's censored the results. I mostly use Duck Duck Go, but there decidedly notice odd things occasionally -- like one or two results when searching for a part datasheet -- and that's not mentioning the whole Tianamen Square thing that happened recently.
Looking at the UK for myself.
UK National Security Requests spike is huge 6/30/2015 to 6/30/2019 https://www.datawrapper.de/_/ys8L7/
but if you look at products in eg the highest period ending 6/30/2015 https://www.datawrapper.de/_/3J2Qg/
Total of 485 most requests (291) are for google docs. Bad info sec maybe?
Looking at web search alone (national security).It does have a small spike similar sort of period in that 2016-06-30 to 2019-06-30 (in that its not been used at all in any other period! So of the 21 periods, its only been used in 7 of those periods)
Does go up to a whopping big 23 in 2017-12-31.