Fastest way into London from the West

[JB!]

768 said:

The drive in was easy, took nearly 15 minutes off the ETA.

Hillingdon car park was full, with drivers just looping the car park glaring at new arrivals. No sign of a trebuchet either, must have just missed each other.

So back I went to Uxbridge. Where it didn't take my contactless credit card.

Hate this journey.

Next time Bicester