The problem with Parcel Force I had twice is that if they could not deliver the parcel on time they updated the status that no one was at home when they attempted delivery, where I'm 100% sure I was in almost whole day waiting for the parcel and even when out I instructed my flatmates that I'm waiting for a courier. On one occasion I checked the online tracking and it showed that 10min ago the courier attempted delivery and I was at the flat. Also no card was left. I can understand that they can be busy etc so not that bothered, I just had to wait longer for my stuff.
On the plus side I bought a frame of a guy once, told him to pack it up securely and I ordered a courier collection. Turned out the frame was put in two bin liners that were sellotaped together (that was securely for him even though I asked him to use some bubble wrap). Frame got to me in once piece, no dents, scratches etc Might have been lucky though. 🙂