Hesta54 it's not a case of being careful - it's a case of stating the facts published by the Electoral Commission and the NCA:
Electoral Commission:
Following its investigation, the Commission has reasonable grounds to suspect that:
A number of criminal offences may have been committed.
Due to multiple suspected offences, some of which fall outside the Commission’s remit, the Commission has referred this matter and handed its evidence to the National Crime Agency.
NCA:
NCA initiates investigation following Electoral Commission referral
The NCA has initiated an investigation concerning the entities Better for the Country (BFTC) and Leave.EU; as well as Arron Banks, Elizabeth Bilney and other individuals. This follows our acceptance of a referral of material from the Electoral Commission.
Our investigation relates to suspected electoral law offences covered by that referral, as well as any associated offences.
While electoral law offences would not routinely fall within the NCA’s remit, the nature of the necessary inquiries and the potential for offences to have been committed other than under electoral law lead us to consider an NCA investigation appropriate in this instance.
Where have I said anything other than "being under investigation for criminal acts"?