1. The origin is a station in the London Zones.
2. The destination has more than 3 platforms (EXTRA: and is not in the London Zones).
3. The journey takes less than 2 hours.
4. The traction is electric (EXTRA: and is run by a class 377)
5. This service is not operated by a Firstgroup company (EXTRA: and is also not operated by Southeastern).
6. The origin has no through platforms and the destination has all through platforms (EXTRA: and the destination has 4 platforms)
7. More than 3 stations along the route are also served by another TOC (EXTRA: this TOC is SWR)
8. The destination is south of the origin.
9. This service does not start, stop or terminate at a station in a coastal town/city.
10. This service can be run by EMUs in 4, 5, 8 and 10 car formation and when run with longer trains SDO is used.
11. The origin of this service is London Victoria.
12. This service runs at 1tph, but runs at 2tph in the peak, the second service being an extension of a service that takes the same route but terminates earlier on the same line in the off peak.