I went to the ticket office today to purchase a Dundee to Brentwood Off-peak return ticket. I expected it to cost £151.70 but was surprised when the clerk said it was £141 and change. Turns out there is a "not via London" fare for this route - Cue surprise from both of us: how do you avoid London? So the clerk tries an itinerary for this fare. The system spits out: Dundee, Edinburgh, Darlington, Derby, St Pancras, London Liverpool Street, Brentwood. My English geography isn't the best but I'm pretty sure that St. Pancras, the tube and Liverpool Street are all in London. I guess it's just a badly named fare, but why does it exist? It is priced by EC, but the only real difference is that it forces you off their service and down the MML.