I've had a look around on the forum but not seen a conclusive answer (I've seen a range actually) 

 

When I turn the ignition my glow plug symbol has only been flashing up for probably less than a second. Is that normal? On my 2001 1.9 Octy they would show for a good 4-5 seconds

 

I should add that it always starts beautifully

 

This is a 2008 Fabia 

Don't worry about it, the glowplugs are controlled by the ECU and stay on as long as needed depending on the temperature, the light is really a warning lamp, if it fails to go out or flashes then there's a problem.

Nice one, that's good to hear. Thanks!