I recently sent an EUB to Beedster (London to Wales) via ParcelForce (the only company that offers a 'large box' service). I put very prominent stickers on both sides of the box saying "Fragile - musical instrument".
So Mrs Beedster comes home and finds a shredded box in her garden, with a big hole in one side, packing material blowing everywhere, and sat in the pouring rain. A covered porch was 10 feet away. Furthermore they forged Beedster's signature to pretend he had accepted delivery.
Utter disgrace. Fortunately the bass was so heavily packed and solid it was unharmed. Otherwise this would really have kicked off