You Do Need power plug adapter while traveling from United States of America (US) USA 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 United States of America (US) USA are A and B. This is how they look like.

In United States of America (US) USA, 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

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