Presenter and writer Hartley-Brewer said on Sunday night that she had received tweets from irate remain supporters.
But Webb gave her complaint short shrift...
And things quickly went on a wild ride from there.
Webb admitted that he “shouldn’t pick on a journalist” but quizzed Hartley-Brewer on why she was “so defensive” over the issue.
She went on to accuse him of pretending his position was “moral”.
Webb also went on to retweet:
Extracts from Julia Hartley-Brewer’s opinion piece saying those aged 16 and 17 should not be able to vote in the upcoming EU referendum were included in May's Scottish Higher English paper.
Hartley-Brewer wrote in the Daily Telegraph: “If my eight year-old can wait to vote, a couple more years isn’t going to do our 16 year-olds any harm.”