Replacement external locker locks

Hi,
 Has anyone had to replace the locks on the external under bed nearside locker?
We had an experience on our 2018 Bourton where we locked ourselves out with the keys inside. (This was easily possible with the Mercedes central locking system.)
Well I managed to force the locks on the external locker, squeeze inside and appear from under the nearside sofa/bed and unlock the van.
This has left the locker sort of lockable, but really is in need of new locks.
Are these within the scope of a  DIY duffer, or do I need to visit Willersey to get it sorted.
A guy on a site recently said that it would need a new locker door!! surely not.
We now secrete a key outside just in case!!
Phil

Probably Zadi lock barrels. Replacements available. 6 set if you want to keep keyed alike.

https://www.ebay.co.uk/itm/391478472685

You need the "red key" to remove old barrel.

https://www.ebay.co.uk/itm/324067805442?hash=item4b73f24902:g:78kAAOSw25Fi1Ydw

Cheers Peter, will go out and see if thy are the correct locks.

Phil