You Do Need power plug adapter while traveling from British Virgin Islands to Isle of Man.

Here is Why You Need An Adapter

The outlet and plug type used in Isle of Man are C and G and in British Virgin Islands are A and B. This is how they look like.

British Virgin Islands

In British Virgin Islands, outlets of type A and B are in use.

Type A

Type B

Isle of Man

In Isle of Man, outlets of type C and G are in use.

Type C

Type G