I also did not notice btc price change after that but the US market might be a bit more "influential" in terms of a potential boost. Idk
Yep. US is much more "influential".
"As of 2021, the size of the bond market (total debt outstanding) is estimated to be at $119 trillion worldwide and $46 trillion for the US market"
https://en.wikipedia.org/wiki/Bond_marketIts close to 40% while UK is only around <$2T - 1.5%
So I can assume that US bond market is more than 25 times more "influential". Will it affect bitcoin price? I think that there are not many things stronger than 'we print again' announcment.