Are you including through lines without a platform adjacent to other lines which aren't in the centre? For example if I remember correctly Rugby has a southbound one which is sometimes used by Avanti to allow a following service to overtake.Any examples out there of avoiding lines (which completely bypass a major station) that are currently still being used, even if occasionally, by passenger trains in service?
Such as, for example, possibly might be the case at locations such as Carlisle, Carmarthen, Crewe, Darlington, Inverness, Swansea and/or York?
(Not thinking here of lines that run through the centre of a given station, albeit not adjacent to any platform face, such as a number of stations on the Trent Valley).
Or are such avoiding lines ever only used by freight workings or ECS movements?
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XC used to run a single service in each direction via Weston-super-Mare on Saturdays, don't know if they still do. No doubt because Weston is traditionally a major seaside destination for Birmingham.A lot of trains between Taunton and Bristol bypass Weston-Super-Mare (I think all XC services between the two plus the relatively rare Exeter-London GWR services via Bristol?).