I was just reading about this too.
It's a thought provoking one. I believe that if politicians deliberately mislead the public they should be held accountable. And he did mislead the public. He knew it was not 350 million because he stated it at other times what it really was.
The despicable Rees mogg is giving it that courts can't interfere with politicians and sometimes they exaggerate, but I think that's like saying it's ok for people in positions of power to lie if they think the end justifies the means. It's not ok.
On the whole, I think I am coming down on the side of there is a case to be answered here.
Yes he is innocent till proven guilty but we all heard him say it and we also can easily see the times where he explained it accurately. So either he is so fucking thick he's not fit for office, or he lied, and he's still not fit for office. And let's be honest. He's not thick. He just never thought he'd be held accountable.
I think I'm coming down on the side of he should be made an example of, because politicians can't get away with lying to the public to get a result they want, and especially not on something as big as brexit.