I would either use a non intrusive test screw driver to test for power, any hardware store has these for 2 to 5 quid.
If you dont have that, turn off all the power at the consumer unit, then connect like a side light or anything that you know works to test for power.
ALWAYS TURN OFF THE POWER BEFORE DOING ANYTHING INTRUSIVE.
Sorry for tyhe patronising caps.
@Poppy started
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I would either use a non intrusive test screw driver to test for power, any hardware store has these for 2 to 5 quid.
If you dont have that, turn off all the power at the consumer unit, then connect like a side light or anything that you know works to test for power.
ALWAYS TURN OFF THE POWER BEFORE DOING ANYTHING INTRUSIVE.
Sorry for tyhe patronising caps.