A "+via London" ticket would be valid on either route across the Solent, as far as I know.
This is not quite right:
- there is an easement that forbids tickets routed "Any Permitted" to be used on the hovercraft (that would not affect what
kieron is saying, but I am including it for completeness)
- another easement requires travel on hovercraft to be routed "Hovertravel" (so that does ban "via London" or "Three Bridges" fares, for example)
- the fares data has a ban on travelling via Southsea Hoverport for all "Any Permitted" routes (a very poor way of implementing something like this)
In addition the staff on the hovercraft are on the lookout for any ticket which is not routed "Hovertravel". They have a reference book with what's allowed and what isn't.
The outcome of this is:
- fares including "Hovertravel" in the routing are
only valid on the hovercraft
- fares routed "Wightlink" are
only valid on the ferry
- fares routed "Any Permitted", "via London", "Three Bridges" etc. are also
only valid on the ferry.
In other words, there is no longer any fare that is valid on both. Which is a bit of a shame really.