The Northern Rail/Johnston Press rail offers are back on again at the end of this month (Sept 2018) - as usual it's £10 for a Day Ranger ticket or £17.50 for a weekend ticket.
Vouchers are available to collect from newspapers 24 Sept 2018 for a 3 week period. Travel is for the period 24th Sept 2018 to 24th Nov 2018.
Details available are available @ https://www.northernrailway.co.uk/jpress.