Private car from Heathrow to Southampton

[dreamboat43]

How do I book a private car from Heathrow to Southampton?  Flying in one day.  Leaving on the cruise the next day.  

[ziggyuk]

You can book a car with West Quay Cars https://westquaycars.com/
The National Express bus is great but I assume you would rather have a private car.

[michelew650]

I know it's not what you asked but that's what I originally planned to do. Instead we are staying right at Heathrow (because we arrive at 8:30pm) Then doing the International Friends transfer to Southampton cruise port with stop/tour of Stonehenge on the way. For two of us it was a similar price to what a private car would have been, but instead we get picked up right at our hotel with luggage and get a pre-excursion in the way to the ship