I agree that LPG has gone up - we pay 46.9 at our nearest Shell Garage and 48.9 at our local Total garage.
I too used to pay 39.9 but then petrol was 78.9!!!! and look at it now! N- Look a diesel now!
I have Petrol stations with LPG all around me and have never had a problem on the M25! - Mainly because there are so few service stations anyway!! I can top up at Fleet on the M3 and the Winchester Services sell it as well.
Don't forget you can fill up on LPG in some of the oddest places (often cheaper than at a petrol station!!!) - Calor Gas centres are usually tucked away on industrial estates as are other suppliers.
Local business firms that run LPG fleets often allow the public to fill up as well. There is a firm at Bournemouth International Airport where you can do this and whilst this was useful some years ago, now that the Shell garage up the road sells the stuff, I have not been there for some time.
Must go back and check out the price.
I agree diesels seem to be the way to go, but even so, it is hard to get away from the simple fact that even at 46.9 p/L I can run my 3.9litre V8 Discovery at an equivalent of close to 40 MPG when solo and 36 MPG when towing. Now with the cost of diesel in the UK being that much higher I estimate that for me to get the equivalent economy I would need to achieve 47 mpg solo and about 42 mpg towing. Not insurmountable I grant you. But my sons 200TDi Discovery gets no where near that.
Neither do the large tow cars such as the 3.0L BMW's and Jaguars so beloved of certain, now "passed on", members of this Forum
Then fold in the environmental and engine wear benefits and LPG makes sense to me.
As for LPG in Spain - up until recently LPG was not taxed there at all but it was restricted to Municipal Vehicles only. But you could still get it as a holiday maker but you needed to plan your journey well.
It was worth it when you could get it at about 15p a litre! (God that was GOOD! - I still dream about the Shell Garage in Santanda!)
But as I travel in Spain a lot, that is one reason why the conversion I had done on the Discovery was to have two under slung tanks and retain the original petrol tank. The far neater conversion is to have a "round" tank where the petrol tank was and a smaller petrol tank fitted up in the rear wing.
This works well in the UK and France Holland etc, but not good for Spain.
The advantage of my system is that I can load up on cheap LPG, cheap petrol and run for miles and miles without filling up.
But usually in the UK I have a gallon of petrol sloshing about in a wacking great big tank for emergencies and just enjoy cheap motoring via LPG at 46.9p per litre