You Do Need power plug adapter while traveling from Trinidad & Tobago to United Kingdom (UK).

Here is Why You Need An Adapter

The outlet and plug type used in United Kingdom (UK) is G and in Trinidad & Tobago are A and B. This is how they look like.

In Trinidad & Tobago, outlets of type A and B are in use.

Type A

Type B

In United Kingdom (UK), outlets of type G are in use.

Type G

I am from

going to