Zafiras are great but you won't get 7 adults in and any luggage. In fact, you need to be a midget to fit in the back seats.

However if you want one we have about a dozen in stock from £3995

The only REAL 7 seater that has any decent room in is the Honda Shuttle!

But as said above, get a cheap derv transit minibus with 14 seats and take the last row or so out for luggage.

I believe the rules are you can drive a 14 seater if it's not for profit? But sounds like you don't need that many anyway?