The regulations vary from country to country.
HOLIDYOYO Lamp Harp and Lampshade Holder Kit Metal Frame Double-Layer Silver and Gold Iron Construction for Table Lamp Repair
John Lewis Jubilee Metal Twin / Double Wall Light Fitting - E14 Candle SES
Projectpak Double Bulb Socket, 2-Light Twin Cluster Socket, Incandescent Lampholder, Medium Base E26 Phenolic Double Light Socket, with 1/8 IP Bracket, Wire Leads
Medium Base E26 Double Light Fixture Socket,Phenolic Standard Base Twin Cluster Fixture Socket with 1/8 IP Bracket (1-Pack)
Medium Base E26 Double Light Fixture Socket ,JNXQWE Phenolic Multi-Cluster Incandescent Lampholder with 1/8 IP Bracket 10cm Wire Pack of 1)
DOUBLE LIGHT SWITCH SOCKET COLOURED ACRYLIC SURROUND FINGER PLATE - HUGE COLOUR
