Commenting on Boris Johnson's remarks that a post-Brexit customs partnership would be 'crazy', Liberal Democrat Leader Vince Cable said:
"Ironically, Boris is right. A customs partnership is – as he says – “crazy”. It is a poor substitute for the UK remaining within the EU.
“As part of the EU, the UK has a seat at the top table and access to a multitude of ready-established trade deals. Any alternative trade and customs relationship with the EU will pale in comparison to the one we already have.
"Yet again this Tory Government is demonstrating to the Europeans who are negotiating with them that they are internally divided. When a leading Tory describes the Prime Minister’s proposals as “cretinous”, why would Mr Barnier take them seriously?"