Need a rear bike rack to fit on a Mini Countryman

I'm not looking to spend much (less than £100) and to carry two or three bikes at most.
The car has a relatively squared off back end but is still a hatchback.
It's my wife's car and she has said she would not want to use a roof rack so that is out - it needs to be one that hangs off the back end.
At the moment it would only be used to carry my road bike as I'm the only one cycling but my wife will end up with some sort of hybrid in the near future and we'll use this rack to carry both hers and my hybrid when we do easier rides together. We've just had a daughter so eventually there'll be a third much smaller bike to add to the rack too.
Any ideas on a good one to buy?
The car has a relatively squared off back end but is still a hatchback.
It's my wife's car and she has said she would not want to use a roof rack so that is out - it needs to be one that hangs off the back end.
At the moment it would only be used to carry my road bike as I'm the only one cycling but my wife will end up with some sort of hybrid in the near future and we'll use this rack to carry both hers and my hybrid when we do easier rides together. We've just had a daughter so eventually there'll be a third much smaller bike to add to the rack too.
Any ideas on a good one to buy?
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I have one of these http://www.pendle-bike.co.uk/shopping/strap-on-rack.php which is ok, but prefer my tow bar mounted or roof mounted alternatives. However, you may well need a lightboard. I can get away with it on the wifes car as she has a Picasso so the bikes are lifted out the way of the lights/number plate.
Dolan L'Etape
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