The EU must call Boris Johnson's bluff

The result of the Brecon and Radnorshire by-election on Friday was not wholly unexpected. After all, the Tory candidate had been found guilty of falsifying his electoral expenses records, had been the subject of a recall petition and had been renominated for the by-election in a gross gesture of defiance.

The victorious Liberal Democrats had come to an agreement with the Greens and Plaid Cymru that gave them a clear run as the ...