Help! I cracked the rear light cluster

Can anyone help me please?
I had, when I purchased my 2017 Kingham, a bike rack on the rear offside (drivers side) door. I have since removed it to prevent further injuries (another story)
One day I opened the rear doors and accidentally touched the release button which lets the door open 180 deg.
when this happens the bike rack digs straight into the rear light cluster and gouges a nice hole in it.
For now I have taped the broken piece back in, but I need to replace it.
How do I know which one to get and where can I get it, other than Peugeot direct,(must be expensive).
I have seen the posts on gaining access but I don't see any advice on the purchase of a replacement.
Thanks in advance

Loads on eBay , one example...

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As always Paul you're a star
Thanks

I recently reversed the Duo into our wood store and broke the rear o/s lens.

Looking on ebay at £49 I then thought how good are they, so rang local Motor Factors and was quoted £98 inc, which I went for. This factors has a very good name and only will supply good parts.
They asked for the reg No. just make sure when ordering you also say which type you have, by your year it will be the hockey type reverse one.

Fitted within 1/2hr bit fiddly loads of screws but simple.

Had to change mine, no tape as MOT due next week
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Richard