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

Here is Why You Need An Adapter

The outlet and plug type used in Mongolia are C and E and in United Kingdom (UK) is G. This is how they look like.

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

Type G

In Mongolia, outlets of type C and E are in use.

Type C

Type E

I am from

going to