Hey birderuk, Sony sells the parts on Your It Delivered: Website: https://www.youritdelivered.com/
Phone: +44 (0) 1932 226677
E-mail: customerservices@youritdelivered.com
I'm not sure which part do you need, is it one of the below?
Base (H) block assy (Base assy, screw
(Tripod screw plate)
Base (D) block assy
Base (F) block assy
Base (G) block assy
Base (I) block assy
Base (J) block assy
Base (K) block assy
Reflex prevention ring A
Reflex prevention ring B
Reflex prevention ring D
Reflex prevention ring E
Shoulder strap
Grease (blue)
Spacer
Desiccant
Anti-fogging lens solution
