Can anyone help, sat nav stopped working at 330am just before I needed it for a journey this morning.

Have you updated the maps recently with non Skoda versions?

 

See here:

 

No, I haven't updated anything, tbh I wouldn't know how.  I've had the car a year and my dad owned it for three years previously 

I had a similar problem a while back.

I eventually found that water had infiltrated the ariel and was showing the car as about half a mile to the right of its actual position.

Solution was to buy another GPS ariel, whip out the radio, wire in the new ariel and stick it top left of the screen

It cost about a tenner off ebay.

 

I'm not saying this is your issue but at least you have something to start looking at ..... 👍