Deliberately lying, perhaps not. We shouldn't pretend though that the Bank of England, and Mark Carney in particular, do not have outside interests and are truly apolitical.
The Bank of England has been wrong before with their projected forecasts as you damn well know, massive project fear campaign on the remain side.
I'm not talking about being right or wrong. That isn't the debate, it's whether people were deliberately lying. Whenever the leave campaign are accused of that, the standard retort is that 'both sides did it'. That's not true, and there's a huge difference between saying with the best thinking available to you, but then being wrong, and saying something you know full well is wrong.