Koi

I think I am lucky and found a new home for my Koi, That said, Please can anyone advise me how I get them to their new home. They're not small. Approx 18 inches+ in length and somewhat broad. I need to get them from West Sussex to somewhere in Hampshire. Not too far, but at least an hour and forty five minutes on the road. I simply need advice or if any one can give me an estimated cost for a service that can transport 5 fish. Thank you.