Rewire an old light fitting

[FrodoOne]

Or, you could use the double insulted plastic insulated equivalent,
since "Single Insulated" flexible cable is no longer permitted for 230 V applications.

Such "Single Insulated" conductors are now termed "Speaker Wire" (i.e. suitable only for Extra Low Voltage applications.)

See

Amazon.co.uk : 3 core 0.75mm cable

or
the slightly lighter

0.50mm 3 Core 3A Flexible Cord - Flexible cable

Buy 0.50mm 3 Core 3A Flexible Cord online today from just £0.40! Visit us to see our full range of Flexible cable.

www.electricals247.co.uk

 

[Ragnar_AT]

The problem is you need some kind of enclosure around the „choc block“ connector that joins all the wires from the individual arms together. The tape isn‘t enough.

I don’t specifically know about the UK but H03Vh-H is still harmonised for mains voltage (300 V), if very uncommon in Europe.