There are many reasons why people in the UK would need to ship goods to the Caribbean, not the least of which is that many UK families have extended families and relatives there. You may very well need shipping to Trinidad, for instance, to get birthday or Christmas presents to them, or maybe to send them some items that they can’t buy on the island itself.
Then again, some people may decide that they want to go back to the island from which their parents came originally and may need shipping to St Lucia for the complete contents of their homes. It is a big decision to make, but St Lucia has the big advantage of its’ climate. Set near to the equator, St Lucia has daytime temperatures of 28°C to 30°C all year round, and when you compare that with Newcastle or Liverpool in the winter it is very inviting. None of the blazing heat that you get in some countries, but just comfortably nice and warm.
Of course, many businesses need goods shipping to Grenada, Jamaica, St Lucia, Trinidad, and some of the 7,000 other islands in the Caribbean, and these may be regular deliveries or just to fill a one-off order.
Whatever the reason for shipping goods to the Caribbean islands, the most important thing is to find a shipping company that is established and has experience of shipping to the island that you need. You need your goods packed and shipped safely so that they arrive in the Caribbean in the same condition they left the UK.