Let us imagine that I am uploading the application for a faculty position (e.g. lecturer) in a university in UK today. What to expect next? Should I wait for their reply anyway or only in the case that my application is in a short list? How long might it take to get an email from them (weeks, months etc)? Thanks!
In my experience English universities will notify all applicants shortly after the shortlist has been decided upon, either with a positive or negative response. Moreover, this decision is typically quite fast, around 2weeks - 2months.
 I have insufficient experience with Welsh and North-Irish universities, and have applied to Scottish universties and never received a response at all.