This question relates to a CBG-HSL Off-Peak Return. Restriction Y4 applies, but that limits only the timea of travel and on weekdays (no weekend restrictions. The routeing guidance is that travel is permitted by "any permitted route". My question relates to a HSL-CBG journey on Sunday morning, 15 Sept. According to the NRJP, I can only use the return portion of my return ticket on the XX42 services from HSL, and then not on the direct service to WAT. (NRJP amusingly suggests changing at Guildford, Leatherhead or Epsom, Carshalton and Farringdon or Blackfirars or Farringdon - depending which hour you're travelling. This adds almost an hour to the journey time). Raileasy suggests XX42 journeys via Clapham Junction, Victoria and Kings Cross. This cuts the journey time, compared to the NRJP's suggestion. But if you want to travel on the direct (fast) train to WAT, Raileasy says you need to pay more. In other words, they (and NRJP) seem to think that the OPR isn't valid on the direct/fast trains from HSL-WAT (but they both permit it on the outward leg). (Raileasy also has possibilities starting on the XX17 from HSL, which the NRJP doesn't offer...) Over on TrainTickets.com, that site sees no problem with using the XX42 fast trains to WAT. Which cuts the overal HSL-CBG journey time to 3h 15m (includng the recommended cross-London travel time). So can anyone suggest a good reason why neither NRJP nor Raileasy suggest/allow the fastest journey, using a direct service into WAT with the return portion of an OPR on a Sunday morning?