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Sadly not, pretty much all the stuff was either bought off here or though eBay so have very little in the way of proof of ownership.
poodawg-
You should report this to the police. See the advice in here:
https://www.lfgss.com/conversations/176548/
The police contact details may be out of date, I haven't updated this in a while. What has happened to you is basically burglary, forget about the fact it's bike parts for a moment. The police are generally very interested in burglary. If the person't mate (let's call him 'the fence' for now) seems fairly expert at this, he may do this regularly. The police are very interested in people regularly engaged in criminal activity, and when it comes to bike theft, fences are certainly interesting as finding them may lead to other criminals and disrupt the chain for a while. Proof of ownership is secondary for the time being. The police need enough evidence to charge someone and if there's a stash of stolen goods there's a chance something in it will be traceable. Good luck.
Oliver Schick
Hopefully you have frame numbers? That's pretty conclusive.