Thanks that's good to know.
Given that we settled privately, and not via insurance, I would argue that the driver has paid for the damage caused to my bike, specifically we agreed to settle on the basis of a quote from a mechanic. Regarding the shifters, the report does say they are functional, but quotes for replacement as it is not economical to repair cosmetic damage, I guess the only quibble area is the labour cost £10 for fitting. I could swing this morally as an inconvenience payment I guess
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When I accepted the payment from the driver we agreed to sign a statement that stated that the exchange was final and was in relation solely to damages, so hopefully I am not in fraud territory!
I'd like more opinions on this, otherwise I may get the shifters replaced as I'm not trying to be dishonest here, I just assumed the money was mine to do as I see fit, I had even considered downgrading, would that be permissible?