Do I need previous delivery experience of some kind?

I don’t know where you live mate but in my area as long as you have the licence you will get a job, even if your only driving experience is on a push bike.

Same goes for the busses actually round these parts, as long you know which end the drivers seat is at they will give you an interview and the carrot with that is, they will also put you through the test.

If you want to drive a van for a few months because you haven’t got the licence, go for it, but don’t do it because you feel you need to do it for a job, as said multi drop in a van bears little resemblance to a 1 hit long distance run in an artic.