Yeah I used to use Hermes/Evri when I sold stuff because it was cheaper. I found a few annoyances with it though.
My local convenience shop always claim to not have space to take the parcels, and when they do, they litter their actual shop floor with them where the public walk all by them.
Slow to get picked up and processed. Delivery times slow. Often go missing from the system for days to then finally be delivered.
The latest thing that has happened twice to me in the last couple of months is that they claim the parcel is too heavy or large for the service selected. This is despite me weighing it and measuring. They then hold the parcel to ransom demanding a penalty charge which is usually more than the original cost to send it in the first place. They currently have a parcel of mine worth £25, which I already paid £10 to post. They want another £10 or so to release it. Out of stubbornness I've just left it in their system to see if they ever deliver it anyway when they get bored of holding it.