I thought I'd seen this offer flagged up in this thread already, but having just had a quick glance back through the recent pages I can't find it so perhaps it hasn't been mentioned.
It's the South West Trains "
Winter Promotion" - £14 Off-Peak single tickets if booked online by midnight the day before. It comes to an end on Sunday 9 April, having been running since Saturday 14 January.
Worth noting the £14 price is for a single ticket, which is the same as their last promotion, but the promos which ran before that were for return journeys (at a cost of circa £15). I wonder if this increase might partly be a response to reported overcrowding during previous offer periods? Though perhaps just as likely an effort to extract more cash as the current franchise draws to a close. Given the
upgrade works happening at Waterloo this August, I highly doubt SWT will run an offer over the summer.
One thing that is frustrating is that these £14 promo fares only show up on some booking sites (e.g. SWTs obviously, EMT, VTWC, ATW, Northern, Scotrail, Grand Central, XC, Chiltern, GWR) but not on others (e.g. Greater Anglia, VTEC, TPX, c2c, Hull Trains, raileasy, trainsplit, the Govia sites - GTR, Southeastern and London Midland). I don't really get why they all can't/don't offer said tickets? It's not like SWT is restricting sales of these promo fares to its own site.