These "investments" are rubbish. Show either deliberate misunderstanding how economy works or incompetence. If someone invests £100bn, what do you think they expect? The money to vanish or getting nice return? Yes, the scraps will go to interim workers, but at least £200bn will be sucked out of the UK economy back to investors, likely not willing to pay taxes.
If UK government wanted to properly invest in the AI, they would be developing chip fabs and embedding themselves in the supply chains.
It's a perfect time to build DDR5 factory, if GPUs are too large undertaking.
>but at least £200bn will be sucked out of the UK economy back to investors
That's not how the economy works... Nothing gets "sucked out of the economy", and certainly not a productive investment that generated that income.