Question for the Brits here, what do you call a Belling-Lee connector?

Interestingly, Wikipedia says: "The IEC-169-2 connector is recognised as a source of signal distortion and has become a particular concern with digital signal reception, specifically UHF HDTV."

I recall that my own measurements (in the 1960s) indicated that a genuine B&L connector was actually a pretty good match at UHF TV frequencies (well, up to 500MHz or so) - certainly not enough to give me any concerns that the whole of the TV industry had made a bad choice of connector.