For those in NI (usually Lidl deals are different to GB) - they have what seems to be a 5m 3 phase (description says 22kW) cable for £129 :
Seems a bargain - screwfix are currently £170.
Electric Car Charging Cable - Lidl Northern Ireland
Electric Car Charging Cable - Lidl Northern Ireland
www.lidl-ni.co.uk
Seems a bargain - screwfix are currently £170.