Having sub contracted for most of the major couriers when I worked for Eddie Stobart, I found DPD to be the best of the lot by a long long way.
Their distribution centres are modern and highly automated and the staff seemed to take good care of parcels.
On the other hand, Hermes distribution centres were shockingly bad, dirty, staffed entirely by agency staff who clearly didn’t care about handling parcels, rather than the conveyor belt sorting systems found in DPD’s centres, parcels were literally thrown into cages whilst being sorted.
I remember one Christmas they (Hermes) must have been struggling for transport contractors as the site I was at was loading a tipper trailer with parcels (the kind that carries gravel from quarries!) the driver was doing it as a quick earner he’d found on a “return load” app - where hauliers find jobs to cover their diesel when return from a delivery - he said he’d done a few for them and when he got to the destination he simply raised the topper and dumped the parcels in a heap in their yard, wet or dry!
Their own trailers are loaded loose i.e. just filled with parcels from floor to roof with no thought to anything getting crushed, DPD’s trailers are loaded with parcels contained in cages to prevent crushing or damage.
Hermes are the one carrier I would never even consider using.
DPD show the others how it’s done.