Labour will not want to be known as the party that clamped down on immigration, not least as the left is anti-nationalist and is enjoying the country's fragmentation into an international pot pourri. A copycat Southport event would tip the country into complete chaos so hopefully that won't happen. Starmer will fail to make any headway in giving arrivals and native folk equal treatment let alone privileging the latter, so Labour will be out within 2 years. Tories will come in, roll out necessary national ID cards which you'll have to carry everywhere as is de rigeur in many other countries., and there will be a snap census.