FV4030/4 was developed for British Service to bring British armored forces up to a greater capability than Chieftain whilst pending the development of a true successor vehicle. This trials vehicle differs in some ways from the production Challenger 1, but shows many of the features.

Thanks to the US Army's ACC and the financial support from Patreons, merchandise purchasors, or other direct donations for making the trip possible.
ACC Facebook Page:   / armorandcavalrycollection  

Merchandise (The carousel below seems dodgy)
https://the-chieftains-retail-hatch.c...

Public facebook page:
  / thechieftainarmor  

Financial donations:
Patreon:   / the_chieftain  
Direct Paypal: https://paypal.me/thechieftainshat