nightjar used his keyboard to write :
Would the package be travelling through any of the flooded areas by any
chance? I find DPD to be the most reliable of the courier services and would
expect that sort of problem only if there were some sort of external problem
that was beyond their control.

It would not have to, Crewe to Leeds.

They suggested the collected it on Thursday, now they changed that to
having collected it Friday - which suppose helps it meet the next day
delivery.