Not heard a thing, but I'd have thought with diesel currently ~25c litre dearer than petrol they may want to think about that some more if it is true!
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Jeff
1994 Defender 300TDi 110 - my toy
2004 Yamaha YZF-R1 - my slightly faster toy!

2007 Disco 3 V6 SE - the wife's (So I'm told!)