Just to update, DPD eventually responded to my e-mail, they promised to have stern words with the depot responsible for the driver. There was talk of retraining, so hopefully our offender will think twice before doing it again.
And totally unrelated to my incident, due to neck pains, I have been resorting to getting two buses to work instead of cycling. It takes slightly longer than my 50 minute ride, its 1 hour 10, including a 15 minute walk. It's costing me £4.80 a day (weekly pass) to use two different bus services to travel 10 miles which is unpalatable when riding costs next to nothing. Well, only if you ignore the cost of the bike and servicing/parts, which I guess isn't entirely fair.
Overall, it's not bad, I don't mind the reading time, but I don't like being subject to the whims of cancellations/delays and feel the pounds piling on now my calorie expenditure has plummeted. Now the neck is on the mend, I have decided to use C2W to buy a 6 speed bompton. That way I can ride into work, and if conditions on the road deteriorate, I can hop on the bus without a second thought.