All this is very rare to UK tapers. I've gone to scores of gigs a year for over 40 years, and only been searched once. During the IRA bombing campaign in London in 1991. Put my gear in my daughter's bag. Guy spotted it, but was only interested in whether it was Semtex or not. Never been challenged for taping, although oddly a few times for using a (proper) camera, while surrounded by iPhoners waving their devices around. The only time I've had a request to tape turned down was last year by a US artist. One well-known Scottish singer did ask WHY?, but more because he couldn't understand anyone wanting to listen again. Afterwards, he came up with the setlist and annotated a few changes he'd made, just to make sure I got it right. I love this hobby.