The cycle path along their is surprisingly decent, if you can ignore the lorries 12 inches from your shoulder. There's not a lot of good alternative routes out west.
You are kind of on your own at slip roads, and there's no path on the last section from Northolt to Uxbridge, even though it's before it becomes a motorway. There's a big "cycling not recommended" sign on the slip road leading to that bit.
The cycle path along their is surprisingly decent, if you can ignore the lorries 12 inches from your shoulder. There's not a lot of good alternative routes out west.
You are kind of on your own at slip roads, and there's no path on the last section from Northolt to Uxbridge, even though it's before it becomes a motorway. There's a big "cycling not recommended" sign on the slip road leading to that bit.