It’s going to be expensive.
I paid around £75 to have a nomad shipped sheffield -> Inverness.
You can make it cheaper by:
1. Accepting inadequate insurance cover.
2. Splitting it into 2 boxes (Wheels in 1, frame in the other)
I wasn’t prepared to reduce insurance cover on an expensive bike, and I wanted the rear wheel fitted to make sure the chainring didn’t ‘eat’ its way out in transit.
If you can strip the chainset off, wheels off, forks off, etc, you ‘might’ get under the size limits which most couriers impose. (2xHeight + 2xwidth + length, usually limited to 3m or 3.5m added up)
In my case, I was buying the bike so I didn’t want too much stripping down.
Interparcel Titan service was what I went with (which ended up as CityLink in the end!)
HTH