Switched Bakelite Lamp Holder in Light Fittings – Vintagelite
Lamp Wiring Kit Brass Bulb Holder BC B22 Fitting Flex Cable Plug & Switch | eBay
Brass bulb holder fixed flush to the ceiling complete with vintage bulb
Brass Lamp Holder - Raw Brass E27 Ribbed Bulb Holder
Plug in Pendant Light Fitting,2 Pack Plug in Ceiling Light,E27 Lamp Holder Suspended Hanging Light Fitting,4.5M Cable Extension Hanging Pendant Lamp with On/Off Switch and UK Plug for Bedroom Kitchen : Amazon.co.uk:
E27 ES Brass Batten Lamp Holder, Edison Screw, Threaded Body
Pendant Light Fitting with E27 Switch Lamp Holder UK – LEDSone UK Ltd
1/2" Threaded Brass Lampholder, SBS Brass lamp holder 1/2"
Vintage Metal Lamp Holder with Switch, BC B22 Base, 3 Colours | Mullan Lighting
Arlec Angled Batten Screw E27 Lamp Holder White | Homebase