(Personally, I think the time to be honest about it was before the referendum)
"One of the great promises of Brexit was freeing British businesses to give them the headroom to maximise their productivity and contribution to the economy," said Meg Hillier, chair of the committee.
"Yet the only detectable impact so far is increased costs, paperwork and border delays."
The leaders of Brexit said that in the short term there could be additional costs as the United Kingdom adapted, but that in the long term there would be considerable political and economic benefits from leaving the bloc.
The Public Accounts Committee cautioned that the government had considerable work to do to make cross-border trade easier for businesses and that there were concerns about computer systems being developed by customs.
In November, Britain became the last Group of Seven developed nation to see its goods exports surpass their 2018 average level since the onset of the COVID-19, underlining its poor trade performance in international terms.