“Theresa May was in a hurry, she was under huge pressure from Boris Johnson, Brexiters and the rest and she said ‘Brexit is Brexit, we will Brexit’ and they rushed into this first stage

“My view is that we may have made the wrong choice in deciding that we would negotiate first the Withdrawal Agreement – which is a sort of divorce agreement – and then the rest.[…] I know full well from experience that negotiating a trade agreement takes years and years, so I understand why they couldn’t wait for that in order to Brexit for those of the British public who wanted to Brexit rapidly.”

https://www.bbc.co.uk/programmes/p0424210