São Tomé and Príncipe → United Kingdom
São Tomé and Príncipe plugs
Type C
Type FUnited Kingdom plugs
Type GNo shared plug types. A travel adapter is required.
Compatibility: Adapter Required
Voltage — São Tomé and Príncipe 230V — United Kingdom 230V
Voltage is the same. Your devices should work normally.
Device compatibility (phones)
Phones almost always support 100–240V, so yours should work safely. Check your charger label to confirm.
You likely only need a plug adapter (if socket shapes differ). Voltage is close between these countries.