Is the "tax cut" justification the real cause though? The Euro and Yen plunged in lockstep with GBP, which suggests a more fundamental issue beyond just the UK

Is the "tax cut" justification the real cause though? The Euro and Yen plunged in lockstep with GBP, which suggests a more fundamental issue beyond just the UK market. I have to wonder if the mini-budget was just used as justification.