That number was on the bus with an NHS logo and was to highlight just how much money we waste on the EU membership as spending that much on the NHS would be equally pointless.
Hardline brexiteers are backtracking on it, now chief brainwasher Farage has backtracked on it, but go and look at the pic of the bus again. Very evidently, its implying that £349m a week would be spent on the NHS.
Which I agree is a waste of money. But that doesn't make an outright naughty porkie suddenly OK.
The numbers on the bus was part of the official leave campaign run by Dominic Cummings with Boris, Gove etc. Farage and Aaron Banks ran a completely separate, unconnected campaign, and criticised the numbers on the bus at the time.
Nothing to do with Farage whatsoever, then or now.
Nick W clearly knows less than nothing on Irish matters, but that aside. If the UK commit to not putting up a border in Ireland, it immediately becomes an EU/ROI problem ,as the ROI really wont want it, but the EU will have no choice but to force them to install one to protect their single market. It wont work of course, because there is nothing that will ever stop that border being as porous as a sponge.