- Travel to the London Bridge Station in Southwark.
- Drive on the road that connects to the bridge beside the station.
- The route that I took was fairly simple, go halfway across the London Bridge, turn back toward Southwark, and follow the road out of Southwark, and then repeat if necessary.
I'm sharing this solution because, the Victoria Station/Big Ben route was not working for me (only 2 Cargo Escorts in an hour of trying to find them).
Using the London Bridge Route in Southwark I was able to find the other 8 Cargo Escorts that I needed, in only 30 minutes.