On the plus side
It should shut up that damn Katie Hopkins woman for a while, but I doubt they'd try to prosecute here.
Generally though, bloody stupid idea!
Edit : Just looked at the CPS Guidance "Communications which are grossly offensive, indecent, obscene or false will usually fall to be considered either under section 1 of the Malicious Communications Act 1988 or under section 127 of the Communications Act 2003." - Doesn't that pretty much describe the whole Brexit Campaign, or anything produced by the Daily Mail.
There is no way this is going to work.