I'm researching options for transfers from LHR (T3) to Southampton at the end of August. Our flight lands at 11:05 am and normally we're on our way out of Heathrow within an hour. There's a National Express coach departing at 11:15 and the next is 1:15. I don't mind booking a private car for the transfer but there is a sizeable price difference.
Looking for opinions and options.
TIA!