Hi mate, these are what you want (door handle lock cap / trim) but these ones are not looking like good quality (even though they say they are!) but gives you a starting point to search
https://www.ebay.co.uk/itm/363019903878#vi-ilComp
EDIT - here are much better ones:
https://www.ebay.co.uk/p/650125273
https://www.ebay.co.uk/itm/363019903878#vi-ilComp
EDIT - here are much better ones:
https://www.ebay.co.uk/p/650125273
______________________
Current:
Not a Citroen!
______________________
Previous:
2017 B9 1.6 BlueHDi Van
2012 B9 1.6 HDi Van
2008 M59 1.6 HDi Van
2003 M59 1.9D Van
Current:
Not a Citroen!
______________________
Previous:
2017 B9 1.6 BlueHDi Van
2012 B9 1.6 HDi Van
2008 M59 1.6 HDi Van
2003 M59 1.9D Van