I've keyed a journey from Gatwick Airport (GTW) to Green Park (ZGE) into National Rail Enquiries and been presented with a fare of £20.90 route ANY PERMITTED using Southern's Gatwick Express service to Victoria (VIC) and then the Victoria line. However, no actual sales site will sell me the ticket, nor even say what the origin and destination might be. It's not GTW to ZONE U12* LONDN (0790) as that only has FCC ONLY fares defined.
(The question is entirely theoretical as a combination of an ANY PERMITTED SDS from GTW to Boundary Zone 4 (0043) plus an off-peak day travelcard for zones 1-4 comes in at £14.80; this is my new recommendation for people wanting to travel on the Gatwick Express.)
(The question is entirely theoretical as a combination of an ANY PERMITTED SDS from GTW to Boundary Zone 4 (0043) plus an off-peak day travelcard for zones 1-4 comes in at £14.80; this is my new recommendation for people wanting to travel on the Gatwick Express.)