//I think it's utterly pointless, the distance between a window and an aisle seat (in a 3 formation) isn't even a metre never mind two. The air's circulating round too.//
Seconded.
The seat width on all of SqueezyJet's fleet of 318 aircraft (Airbuses, A319, A320 and A321) is 18 inches. This plan will see passengers 18 inches from their neighbour's shoulder. This is without the other situations on board an aircraft where people are moving about, boarding, alighting and going to the loo. I note, though, that Mr Lundgren suggests that the measure will be an interim one and which he hopes will encourage people to return to flying. Flying involves getting "up close and personal" at a number of junctures during the process and frankly this scheme will do nothing to assist "social distancing" whatsoever. If you want to practise that the only solution is not to fly.