All we have to do is abandon the ECHR, the Refugee Convention, the UN, the G7, NATO and the WTO. Then we can break maritime law and start sinking the boats. Obviously we'd have to proscribe the RNLI and change the job description of the coast guard to encourage people who want to sink boats to sign up. The fishermen will be fine.
Once we start with this deterrent we can start kicking out other undesirables. I'd start with the students. Coming over here using our universities as a gateway to benefits street. So we ban them, no more student visas. We might see a few universities close but no great loss, you learn more in the school of life.
After that take away access to ALL benefits for anyone not born here. Don't care if you've always worked and paid your taxes you're not ENGERLISH so less Dr Khalid more Dr Callum.
Obviously once we start making Britain Great again there may be a couple of teensy issues. Food might cost a lot more because the lefty EU might not want to trade with a nation that wants to isolate itself and kill innocent people. It'll be fine because there will be 100% employment because instead of benefits you'll have to do your 60 hours on the food farm to earn your pound credits.
Family will be legally obliged to look after any living relative as there won't be anyone left to do it because we deported them all. And obviously the NHS was full of loony lefties who went round caring for people instead of focusing on what really mattered, which is profit.
They're just a couple of the benefits of stopping the boats, because who cares about the bigger picture or unintended consequences eh?
Giving up our place on the world stage is a small price to pay for stopping a handful of people coming from countries we benefited from or bombed isn't it?