Vince Cable said MPs criticising the Government over the privatisation of Royal Mail have "the benefit of hindsight".
The Business Secretary said: "We sold at a price that was regarded as the best that could be achieved in the context in which we sold it."
"The point we have stressed ... is the price of shares is very, very volatile. These things go up and down."
"I think the wisdom of hindsight about price doesn't really help us very much."
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Commuters were also warned to expect travel chaos as Doris gathered speeds of nearly 90mph.
A man with 62 penalty points on his licence is among thousands of motorists allowed to drive despite exceeding the limit warranting a ban.
Storm Doris is set to bring severe weather across much of the UK on Thursday as heavy rain and strong winds push in from the west.