Fox, that comparison is really interesting, but for us, i'm not so sure it would work so well as she'll be doing so little business mileage, probably no more than a 1000 per year business and 10,000 private.
I'd be interested to hear what you'd recommend car wise if we took the allowance. Only stipulation is that it has to be reasonably practical as it would be the only car in the household. No kids to consider at this point but who knows in the next 3 years.
The civic was bought to replace a Celica 190 as I was doing 25k a year. I now commute on the train due to an office move, giving the drop in mileage and no loner needing/wanting diesel.