I've used Parcel2go quite a lot. They, in turn, use DHL. Good price, no problems. The only one headache I had was nothing to do with them and wouldn't be a problem for you. A parcel to USA was taken by FedEx who then tried to make me pay triple. Many emails to prove that I'd already paid via P2G then, months later, FedEx tried all over again
Inside the UK (and abroad for that matter) I recommend them.