There aren't any "hordes" of people trying to get into the UK. Last year, 330,000 came in - a tiny 0.5% rise in the population. Over half came from outside the EU. And yes, the French should bloody well toss our border back across the Channel - we deserve it.
And anyway, if we want to renegotiate a trade deal with the EU, we will have to agree to free movement , pay similar amounts in that we do now, get no rebate and have no power to make decisions as a member.
We have completely shot ourselves in the foot for some vague notion of "sovereignty" which actually just means handing total power to whichever bunch of over-privileged public school boys happen to be in power here, totally un-hampered by Brussels from shafting us any which way they want.
So goodbye workers rights, maternity rights, equal pay rights, clean beaches, unpolluted waters, environment protection and HELLO massive recession, a hike in interest rates so you can't afford your mortgage anymore (unless you are a rich Tory like Boris of course), total privatisation of all our public services and the break-up of the UK.
So anyone who says "oh but I didn't really think it would happen" can FUCK RIGHT OFF.