ineos grenadier spare wheel locker box

[James the Farmer]

Where can I buy an ineos grenadier spare wheel locker box?

 

[CRH]

Mine doesn't have a traditional key, it's a plastic tube thing that turns a metal disk sits 5mm or so inside the barrel, except the disc fell out and now it doesn't lock. Thankfully I have the Tougher zipped cover.
This was purchased late last year from INEOS and not fitted at purchase. I always thought the original design looked like a proper key