Obviously he MUST apply before the current visa expiry. The good scenario is the case is dropped on NFA before June so he does not have to declare anything. But if the investigation is ongoing whenever he applies, he must declare the arrest with details. Your husband will be covered by Section 3C ...
My foreign husband has been in the U.K. since 2011, we were just about to apply for ILR when he was arrested and since released pending investigation. Whilst I’m confident, there is zero evidence of this allegation and all will be fine , he only has the right to remain until June 2021 so should we h ...