I just googled ‘“invitation to speak” withdrawn’ and ‘no-platform university UK’. You will find plenty of results for the former; the latter produces a sort of history of the subject - at least for me - and you can see how the topic developed (with, generally, the Right and far-Right being the “victims” of it). You can perhaps also understand, against that backdrop, how (a) it’s less common now - because “everyone knows not to issue such invitations” (as I would express it) and (b) why it’s such a profitable topic for the Right!
Geof, the Right is clearly stoking this fire (eg the suggestion that people needed to protect statues immediately after the Clawson statue incident), but it doesn’t mean it’s not happening, of course: the Right uses culture wars for its own ends.
As does the Left.
Generally, we would hear of no-platforming only when an invitation is withdrawn. If an invitation is not issued, that’s unlikely to make the news.
A quick search, though, pulls up names like Amber Rudd, Steve Bannon, Linda Bellos … Not much of it since 2019 for obvious reasons.
I was, however, dismayed to read some Left opinions on the subject.
“it’s always important to contest the presence of the far right” (2017, re an invitation to Tommy Robinson: the “Socialist Party” very pleased with itself for “preventing far Right hate speech”, https://www.socialistparty.org.uk/articles/24818/01-03-2017/york-university-socialists-prevent-far-right-hate-speech)
Cambridge NUS has a list of organisations which it no-platforms on the basis that “We are not censoring free speech; we are protecting groups of students on campus who have as much of a right to be there as any other student from groups that wish to harm us physically and mentally because of our identity.” (Student groups clash with government over ‘no-platforming’ crackdown | Varsity)
And the Union of Jewish Students campaigns manager Liron Velleman said: “No platform policies for those who continue to threaten or incite violence continue to be an important tool against fascism used by NUS, students’ unions and student groups.” (Student groups clash with government over ‘no-platforming’ crackdown | Varsity)
A few isolated incidents may have been blown up to suit the Right, but the policy of no-platforming organisations and speakers “has lasted for 45 years, and … it is still important now.” 45 Years On: The History and Continuing Importance of ‘No Platform’ // New Socialist