On 13/07/2019 12:48, Tricky Dicky wrote:
To double over or not arguement regularly comes up and I have yet to see a definitive answer. From experience of taking sockets off mostly installed by professionals I would say the majority I have done have not been doubled with the exception of the CPC which I have come across regularly.

Personally I do not double over in case sometime in the future a spur needs to be added. I do tend to use known makes eg MK and have yet to experience any problems of wires not being grabbed in sockets. The last time I had a loose wire was in a wall switch which was a no name make my SiL bought.

The last time I had a loose wire was also in a wall (light) switch ...
last night! I was glad it was a loose wire and not a failing switch, as
the switches are no longer available, replacements don't necessarily
have the terminals in the same place and it is a 4-gang switch, used for
2-way switching - so lots of cores in there.

SteveW