Yes, 2 bolts on either chassis leg.
Can't remember them ever being captive nuts, but my Landie's front bumper wasn't OEM when I bought her.
That will answer your question, If they are captive. :p
Lights can be used as additional full beam.
I can find out the make, model and colour of the cars you own.
Then I’ll clone the plates and do some dodgy dealings, until you get fed up receiving letters in the post or visits from the Bill. 😂