When you inject that amount of money into the economy it causes inflation, which makes us all poorer. It doesn't help us it hurts us. What it was attempting to do was stop the banks and their customers running the banks or causing liquidity concerns and prop up failing businesses for a time with loans. The government wont get it back, its not a loan. Its impact is to take 250 billion from the British people to defend the confidence in the pound but we all pay for it in higher inflation and lower interest rates.