Hi Timi,
As you are aware there are many organisations that undertake international ships via container.
You really need to do some research, take time and select those that best meet your own personal circumstances and needs.
I can tell you that for a 20ft container you can expect to pay between £2000 - £6000 depending on what you really want(need).
That will mostly exclude any insurance and will not include packing and loading etc.
Make no mistake that packing your stuff and loading a full container will be incredible hard work.
A standard so-called 20ft container will have a volume of approx 38 cubic metres
A Hi-Cube 20ft container has approx 43 cubic metres
A 'half-height' 20ft container has approx 19 cubic metres
Remember also, that unless you qualify for exemption, you be facing significant tax and duties at arrival.
At this stage I don't think it helpful to provide recommendations as the scope of supply and service is just too broad.
The best I can do is to help your own research by providing the following links to some organisations that are looking for your business.
Just be sure you have a good idea on the volume of stuff you want to ship, the cost per cubic metre and the cost benefit of shipping (does the total shipping cost outweigh the cost of buying new)
Obviously for some items the value is solely personal.
There's a lot of detail to consider and understand.
1st Move International (ShipIt)
Abels
Anglo Pacific
Bishop's Move
Britannia Movers International
Cambridge Removals & Storage
Excess International Movers
John Mason International
Movecorp
Pearson Home Moving
Pickfords
Robinsons
Simpsons
Sterling
White and Company
You may also wish to consider independent hire or even purchase of standard shipping Containers.
There are 3 basic sizes:-
10 ft Shipping Container
20 ft Shipping Container
40 ft Shipping Container
Timi, what sort of stuff do you envisage sending?