The dream of a clean exit begins to sour for Brexiteers

James Chapman is a name that may not be obvious to you but his intervention in the Brexit debate is a profoundly important one.

Chapman was formerly the political editor of the Daily Mail, which was at the centre of the Brexit campaign. Of far more importance, however, is the fact that Chapman was chief of staff for David Davis, the UK minister for Brexit, up until about 12 weeks ago.

Chapman said last week that Brexit was the biggest catastrophe for the UK since the Second World War.