After 15 years they were due for a swing—and the Tories have been even more feckless than usual. Blair had been swept in on a bigger wave, apparently, than Starmer.
I believe Labour is expected to grant a big amnesty for illegals, which of course will also attract more. So Nigel will do what he can to get his Reform party position for another wave by the next election up to five years out.
Not only amnesty... this huge victory is a dog whistle to all those boats across the channel. It was already bad under the feckless Tories... it will now become a flood. The Anglo-Saxon dominance of the island will be over.
Farage also sees it as a long play.