What would you do with men from Afghan, Syria, Libya, Sudan arriving here?
Send them back? how? not too many BA flights to Kabul and whilst we could send back to Syria/Sudan, what do you think would happen to them?
We voted to leave the EU, so migration into the UK is no longer their concern, we now have v little influence but at least Labour is building bridges with Europe, wants to rejoin Europol and have a close, mutually beneficial relationship, Northern France doesn't want to be a holding station/magnet for migrants seeking to enter the UK.
The migrants arriving here by dinghy are not allowed to work.
Labour had net "legal" migration at 240k in 2010, the Tories have trebled it, so your reasoning doesn't apply to Labour, who certainly don't care about Serco or Capita share pricing.