Get real TTT, just think about it. They land in UK, the Brits put them on a ship & merrily chug over the channel to where; Calais, Boulogne, Dunkirk? Then what ?
This would be a ship entering the EU from outside, full of people with no passports whom they don't want - the French would love that.
Maybe your plan would be to smuggle them ashore during the Night?