UK Pound up again - NOT amateur radio

The UK Pound is, yet again, up against major currencies such as the Euro, Yen and US Dollar. With a UK General Election next week, I am puzzled. With the outcome so uncertain I would have expected a fall, or at very least, things to be static. It is nearly back to the value last year.

I guess the markets are banking on a Conservative government with a working majority and a BREXIT deal being approved soon.  If there is a hung parliament or a Labour victory, we can expect big falls.