I was just wondering about this, seeing as I'm still waiting on my postal vote.
I'm getting mail which has the date on it as two weeks beforehand, like today I got a letter 2nd class from David McLetchie (my local MSP, election junk) which is dated April 10th and it's only just arrived. Same goes for my postal vote, my mum forwarded it up from home and she keeps telling me it should have arrived by now (this was Tuesday when she first said that). Friday... nothing. And it was meant to be first class.
This has happened to be quite a lot lately, mail being late and unexpected. Is it just me, or is there something screwed up somewhere along the line?