We are now in the thick of the election campaigns to determine on 12 December 2019 which political party (or coalition of parties!) will govern the UK.

Manifestos are out and claims within them are being scrutinised for legitimacy. The private lives of public figures (to the extent that is not oxymoronic) are also in the spotlight. And, there are the TV debates.

It may be fair, if not an understatement, to suggest that public trust in politicians is being tested - public patience too, on the particular question of Brexit: When we might know whether we are to leave the EU ‘come what may’ and, if so, whether leaving w...