I'd just ring/email Carradice and ask them; I'd imagine they might sell you one, as they're pretty good at spares and repairs.
This worked btw - 20 quid for it, they responded really quick and were happy to sell it separately
@Thrustvector started
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I'd just ring/email Carradice and ask them; I'd imagine they might sell you one, as they're pretty good at spares and repairs.