Furniture/Personal Possessions/Container From UK

I believe I am correct in saying that I can bring my furniture/personal possessions from the UK if I have either Non O/Non B/Retirement visa and bring them in within 6 months of entry - would that be correct? (Yes I am aware that it might not be cost effective - that’s not my question).

On the basis that I am able to, can anyone recommend a shipper? Is it better to use a Thai or UK shipper and has anyone got any (recent) ideas on the price of a container? I’m happy to pack myself and take to the UK port + pick up from the Thai port.

The quotes I’ve had so far from UK shippers are all vastly different - I mean thousands of pounds different.

Only use a forwarder that has an actual office in Thailand. Getting freight out of a country is easy, getting it in is more difficult.

I shipped my stuff from the UK a few months back and included some Bathroom Furniture in the container. No issues at all with customs, but I made sure everything was clean and clearly itemized on the packing list. The shippers I used asked for photos of bigger items, so I just took a few snaps on my phone and emailed them over. That seemed to help speed things up.