.. what can I do to stop the flies sticking quite so stubbornly to the front face of my fabia?

Getting them off isn't a problem but I'd rather they wiped off without any real effort

Clingfilm?

Used it for long drives to shows when I had my Vento, slab-like front end was prone to it!

That's a very good idea indeed! Thanks

Just thinking about the journey down to Castle Combe on Saturday - a lot of it will be done over 50mph so dead flies and stuff will be a big problem I expect - shame if the rest of the car is clean!

I did Newport to Northampton, pulled the clingfilm off and front was good! Bit of quick detailer and jobs a goodun!

Yep , clingfilm works well as a short term preventative measure , and more generally just keeping it really well waxed helps.

I had to remove bits of pheasant from the front of my octavia yesterday!

Drive in reverse

Or drive like a proper Skoda driver at about 35mph - I guess that would solve the problem!

A hot microfbre cloth placed over the dead bugs. Leave for a moment or 2 and then wipe off.

Clingfilm?

Used it for long drives to shows when I had my Vento, slab-like front end was prone to it!

Not forgetting to leave gaps for the radiator and intercooler.

I've heard good things from guys plowing through muddy fields on crossers, using something called Muc Off.

I've personally never heard of it, but apparently the mud just runs off

Flies may just wipe off at the other end, rather than having to peel/scrape them off.

I have some Skoda Branded insect remover and glass cleaner I might bring along along with some kitchen rolls