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

Here is Why You Need An Adapter

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

Isle of Man

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

Type C

Type G

British Virgin Islands

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

Type A

Type B