[arctan]

I'm in Wembley.
I've had two 940's on LPG with very little trouble.
Approx 100k on first car, one injector wire broke (15 min fix).
Approx 40k on second car, Earth prob (30 min fix).
Kit was transferred between cars for £800. Kit now 10 years old.
I sometimes do the two year-ish filter change (£25), sometimes get an lpg inspection.
Paying 55p per litre (Feb 019). Ave 18p per mile.
Original install by Gas4cars, Milton Keynes. Happy with them. Went for high end Prinz Kit with nice injectors (£1700). I think the retail on those injectors could be £400 and they are thought to be good for 250km or so- hence some of the higher install cost.
I've used BPH garage Slough for any LPG repairs, I hear good reports about ECOtec in west drayton but haven't used them.

And, of course, a healthy ignition system, esp the insulating items. Magnacore leads.
As others have said, get a good install (a bad installer is the root of future problems), avoid clowns if you can!
Personally, I find the stuff coming out of Diesel exhausts really offensive.
What would happen if people had their Diesel exhaust pipes pointing out of their bonnets?
More crap advise from a 'government'.
Also LPG is more frequently used, common even, in a lot of other countries.
I'm happy with it, and will budget for it on my next car.