I have an international flight to catch at 11.30 on a weekday so need to be at Gatwick airport for about 8.30am. I am travelling down from the Midlands on the M40 and know that I cannot avoid the M25 rush hour. How long is it likely to take me from the M40/M25 junction round to Gatwick please. I don't want to travel down the previous night.
Thanks for any help.