With just ten weeks to go until the 31 October Brexit deadline, Brits are becoming increasingly concerned about the potential decline in their passport power. 

As millions return from their visa-free summer holidays abroad, and the more than five million British passport holders living permanently outside the UK anxiously consider their alternative citizenship options, there is a growing acknowledgement that the British passport may soon not be what it used to be in terms of global mobility and settlement freedom.

‘Hard’ Brexit, ‘soft’ Brexit, no deal, or even a second referendum all could result in radical...