You Do Need power plug adapter while traveling from North Macedonia 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 North Macedonia are C and F. This is how they look like.

North Macedonia

In North Macedonia, outlets of type C and F are in use.

Type C

Type F

United Kingdom (UK)

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

Type G