I used to be very close to the Polish and Lithuanian communities (not now due to ill health) and back in the day it would be mostly single guys who would come over and share a house together. They would split the bills at least 6 ways. So it made living costs cheap for them all. So they could afford to take the very low paid jobs and still have enough money to send back home. This is how a lot of the immigrant communities operated. I'm not saying thats a bad thing, its understandable and I would do the same in that situation. But it means that low paid jobs still have competition for them. So there is no incentive to increase the salary.
I think the issue is people don't realise this works both ways. They think it's just limited to UK and it's an issue UK needs to sort. It really isn't.
My brother, UK born, fully uk English man blood. He went to Canada for a year. Slept in essentially hostels the whole time, cleaning hotels to earn enough to pay his rent, pay for food, and more importantly, pay to party. By the end of it he had zero savings, but a year of memories.
he then went to Australia. worked on a farm for i think it was 4 months. living in what can only be described as a fancy barn. working almost every hour for not much.
immigration happens and the work needs to be there for this. the world is a better place that english people can go off to another country for experience/fun/life skills, earn enough to get by, live 6 people a room etc.
while he was working at these hotels/farms etc, there was no other person there but foreigners. not polish, just foreigners to these lands. so other english people farming etc. it happens both ways, but to scared english people that don't get out to experience the world, all they see and hear is that foreigners are coming here and stealing their jobs. they really aren't.
if you increase the wage, do you think this would discourage foreigners, or encourage more to come as they can earn more?
the issue isn't the wage, it's the work as it's the work that you do because it allows you to do things like explore a new country.
i'm sure many would agree that right now they'd never live and work on a farm, not because of the money but because it's a rubbish job shoveling cow poop, however for sure if i wanted to explore a new country for a few years, and to get my visa i had to work on a farm, i'd happily do it no questions asked.