Nigel, what you omit to mention was that for much of 2015 the pound was trading at level above 1.35 Euro to the pound, rising as high as 1.44 Euro to the pound at one stage.

It seems that you cannot except that immediately after the Brexit vote the value of the pound plummeted. It has not, as yet, recovered and although the recent modest rise is observable, there is no guarantee it will stay that way.