In the backroom of my house there is two ceiling light fittings, one of which was disconnected a few years ago. I was looking to reconnect this light and removed the double light switch to see if I could just reconnect the wires.
Inside the switch was the following:
1 red wire and 1 yellow wire connected to the first switch
2 earth wires earthed
2 black wires and 1 blue wire taped off together and
1 red wire taped off itself
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