Yes of course in some areas, immigration levels were crazily high but not in the 2 areas i lived in, the South and South West at the time, levels were manageable.
e- border checks started to be re introduced in the early 2000s, but it also cuts both ways, we don't know who left either.... but anecdotally, i do not see EU workers in our local hospitals or in social care anymore... i believe this is reflected nationally.
I live in Cornwall, which voted Brexit, yet has tiny levels of any sort of foreign immigration.
But why are you focusing in on events 20 plus years ago?
We had 14 years of Right Wing Govt, plenty of time to fix the issues you raise but were they? nope, just made far far worse.
Every metric from life expectancy to waiting lists to road mtce to school building programs were wrecked between 2010 and 2024.
It beggars belief that Reform, basically the right wing of the Tory party, is seen as the answer by many but it shouldn't be forgotten that they attract just 25% of the electorate.