Crabtree White Bayonet cap (B22) Batten lampholder | DIY at B&Q
Crabtree Capital Straight Long Batten Lamp Holder Light Fitting BC 3.5" - Screwfix
B22 Lamp Holder Bayonet Cap Bc Bulb Light Fitting Accessories Bulb Holder Black | eBay
Herbert Terry & Sons Anglepoise Mod No. 1227 - Made in Redditch. ALL 4 designs - many colour variants ALL had bakelite Crabtree bulb holders… | Candeeiro, Luminária