Originally Posted by s0ssos

Captains rarely interact with passengers. Unless you fly on Southwest, which does not operate in the UK as far as I know.
Maybe a decade ago they would stand and greet you but you rarely see them. Most of the time they are in the cockpit before you get on the plane (depends on where you sit, obviously), and still in the cockpit when you get out. Some captains do not announce anything over the PA (Japanese captains routinely do) and just have other people announce it.

Why wouldn't you just want a captain who flies the plane well?