Update: I have today checked mpg after an 850-mile trip to Scotland (and a week's worth of buzzing about) AND a weekend to London (that's around another 400 miles) with a little local driving in between.
Around half will have been almost fully-laden at legal ( well, 'ish' ) motorway speeds with the rest a mix of 60/70 'A' roads, rural and congestion (A1 roadworks, M25 etc.).
I'm no Jenson Button, using the power available as and when needed rather than for sheer hooliganism.
Well, mostly.
Remember too that this is a manual 1.5 - and it's a babe yet with only 2,400 on the clock so it hasn't even fully loosened up yet.
Have I built enough suspense?
Okay, brim-to-brim over 1400 miles = 46.15 mpg
Without "trying", so I'm mightily impressed.