Martin,

That’s exactly what I meant. My previous option shouldn’t have involved a mixed mode fare as it’s entirely within the LO/LU/TL. My current mode is LO/EL and I get charged single mode without having to use validator. Luckily my commute is much easier with EL as my office is on the Farringdon exit side of Farringdon, so I don’t even need to walk along the long EL platform.