tim (moved to sweden) wrote:
"David Cantrell" wrote in message
...
Does anyone know why I can't buy a return ticket between Thornton
Heath and Gatwick returning on a different date from when I start
out?

For no more reason than, because you can't.

More specifically, because an open period return does not
exist for that journey (but TBH I don't think that tells you
any more than the first line that I wrote)

IIRC it was during BR days that a lot of period returns of under 50 miles
were discontinued. CDRs were retained but, since then, for all other
journeys single tickets are required.