Do I require a New Sim for the Caribbean

[James_Wilson66]

Do I require to use a new pass as you go sim for my business phone to operate in the Caribbean 

[Enlli]

Do you mean operating a PAYG SIM in the Caribbean. It should works but could be expensive 

Have a look here

https://www.o2.co.uk/international/using-your-phone-abroad

[Oxonian]

Have you considered @James_Wilson66 getting a local SIM for the Caribbean island that you are visiting ?