You Do Need power plug adapter while traveling from Myanmar (Burma) to Great Britain.

Here is Why You Need An Adapter

The outlet and plug type used in Great Britain is G and in Myanmar (Burma) are A, C, D, G and I. This is how they look like.

Myanmar (Burma)

In Myanmar (Burma), outlets of type A, C, D, G and I are in use.

Type A

Type C

Type D

Type G

Type I

Great Britain

In Great Britain, outlets of type G are in use.

Type G