The seventh clip down at this link
http://www.jagdgeschwader4.de/Casino/Filme/Filme-2.htm
shows DW footage of He111s on a late afternoon strike against Liverpool.
They are carrying maximum bombloads and must've been at the limit of their range. From where would they have flown from and what route would they have take to Liverpool, the commentator referring to "the Irish Sea"?
What routes did the missions to bomb Glasgow and Belfast take?