Fast estate with three proper sized rear seats

[Zerosumgame]

As per the title - I'm looking for a fast estate with three full sized seats in the rear. Obvious choice is an E Class Merc but I'm looking for alternative suggestions. My definition of fast is 0-60 in less than 7 seconds - budget is £10k

[HelldogBE]

I don't think an estate with 3 proper rear seats exists. The middle one is always a compromise, even in an E-class or Superb...

[ZX10R NIN]

I'd say an E Class or 5 Series are the only estate options but neither have true full size middle seats.

[DKL]

R500? Not really an estate but no shortage of seats! 5.5 is the one to get but very thin on the ground. A number, but not plenty, of 5.0 around.

[RedAndy]

Caldina ST245 GTFour N-Spec