We are moving to just outside Glasgow. When I was researching shippers, I used
www.movingscam.com to learn which companies to avoid. We had about 80cuft of boxes to move. We took items we had collected over the years, books, kitchen items, photo albums, art work, pottery, clothing, and hobby related items.
If you have less than a container load, most of the companies will put your boxes into a crate. These crates are certain sizes. I measured our 25 boxes at ~80cuft, but when the moving company came, they said our items would not fit into the 100cuft crate that I had gotten a quote for. Only a 142cuft crate would fit everything, due to the dimensions of some of the boxes. This increased our cost by $500. I guess moral of the story is if you ask for a quote of a certain cubic volume, then you need to ask what size crate they use, and plan your box sizes carefully.
Anyways, for the 142cuft, we paid ~$2500 and a ~$178 insurance premium for our items valued at ~$7500. We used Stevens International for a move from Louisville, KY to Hamilton, Scotland. They were cheaper by several hundred than other companies we got quotes from. Hope this info helps