Funny to react like this, it's not bullsh*t.
U.K. is outside the EEC and you know it.
Why would you expect a faster customs treatment with no duties ?
They receive thousands of parcels each and every day from or to people trying to smuggle on the price, content and declared value, so THIS is what is slowing the process a lot !
Stop taking them for fools and it will be fine (no, I'm not affiliated to the customs at all, but I really hate this useless moaning)
If you want your parcel faster than fast, as I wrote, use TNT Express or the likes as they have their own customs process, you'll be amazed.
Or simply buy in the EEC if you live there or in the U.K. if you live there : problem solved and no useless moaning.