> If this new labour force had not appeared are you seriously suggesting that UK employers would just have paid more and more to attract workers from other sectors?
Yes?! That's how it works... You literally agreed in your previous comment that part of the reason for wage stagnation was the extra new labour force.
> How would they remain competitive?
The same way they were competitive before 2004 I guess.
If your company relies on low skilled manual labourers working 12h a day for minimum wage or you go bankrupt... You should go bankrupt. It stops you from modernising and increasing productivity long term.