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yeah that image you posted seems to be just the clip bit.
This is the pack with the other bits at a nice gaspy price
http://www.sjscycles.co.uk/ti-parts-workshop-titanium-rear-frame-clip-set-prod36519/
check out the related products.
If you have 6mm seat post QR clip, you wont need it so this pack may be right for you
http://www.sjscycles.co.uk/brompton-rear-frame-clip-exc-seat-post-qr-clamp-prod20916/
looks like it replaces the black plastic lever bit and the metal hook bit...maybe the metal spacer bit, next to the nuts.