We still take whoever we want on the jumpseat, all legal, I really do not see the problem!
And yes, we also do this to and over UK aerospace. PIC has supreme authority on whom he/she allows on the flightdeck, as it should be.
I had my share of pretty looking women sitting on the jump, never a problem, sometimes, they require assistance on putting their harness on
Manipulating controls/buttons/switches is obviously a different animal and frankly, they did deserve dismission for that.