I'd surely get a fault code light if I had glow plugs out, would I not? Plus, unless they were all out I'd see it misfire when it caught – it doens't seem to do this. It's almost as if there's air in the fuel line but I'm sure that woudl screw up the CR system way more than I'm experiencing.
Battery is fine since it cranks merrily away whilst not starting. Having said that it does turn a bit slower than I was expecting – maybe oil too thick?
Gee-Jay – you get 50mpg even in winter? I am getting 48mpg on winter diesel, had 54 max in summertime. Also – top tip for pulling out of junctions (or doing anythign else quickly for that matter) is put it in S mode, then back to D when you're away.