Fairford - best driving route.

[Nobby Diesel]

Attending Fairford Tattoo on the Friday.
This is my first visit. Any advice as to what is the best driving route, travelling from the Marlow area.
M4 and M40 are equally convenient, but anyone have any tips? No idea how busy the roads are likely to be. Aiming for a 0730 arrival.
Thanks.

[14]

I went last year and aimed at getting there for around the same time as you are. I live in Sussex, so I went via the M4 and I was surprised that there was hardly any traffic delays at all. I think I got there around 7 as I had planned for traffic delays.