I have shipped a number of bass guitars and other items fairly recently using Parcelforce with no problems at all, save for a small delay during the snowy season.
They come to pick up from my work address and bring labels.
I haven't paid for extra insurance as none of them have had hard cases but always pack well, double boxed and with plenty of padding.
No help to you @Dood I am sorry, but feel I should point out not all couriers are useless.