Yesterday while out driving, I had driven around 20 miles at -0.5 degrees when my ff started stuttering badly, quickly switched the lpg off and all was good.

I then waited around 5 miles till I got to Inverness where the temp was +1.5 degrees so switched lpg back on and the car started stuttering straight away and then stopped. Switched back to petrol and all was good again.

I saw a bit about frozen "solenoid" near the reducer?? Not really sure what this is but does anyone have any ideas if this could be a cause? 2002 Vogue Epsom Green with Ivory Leather.
Discover 2 V8
Discovery 2 TD5
Discovery 1 V8
Audi S4 (2005)
Audi S4 (2000)

A properly installed LPG system shouldn't suffer with anything freezing! I'd be inclined to find a decent LPG specialist and get them to check it over.

You're right Simes

Once I've got the other issue sorted, taken a deep breath, and then I'll get the lpg looked at. 2002 Vogue Epsom Green with Ivory Leather.
Discover 2 V8
Discovery 2 TD5
Discovery 1 V8
Audi S4 (2005)
Audi S4 (2000)