Whilst comparing advance tickets, I came across this ticket on BRFares:
www.brfares.com
It doesn’t seem like a promo fare, but trying to get a journey planner to come up with this fare is pretty hard, as it doesn’t accept via points of Warminster or Salisbury.
How would one use the ticket, or buy it please?

Look up fares for any train journey in Britain
Full details of all British rail Single, Return & Season tickets and Travelcards. Built-in Season Ticket Calculator.

It doesn’t seem like a promo fare, but trying to get a journey planner to come up with this fare is pretty hard, as it doesn’t accept via points of Warminster or Salisbury.
How would one use the ticket, or buy it please?