On 10th August our good friends at Kirkby Stephen East station - on what used to be the Stainmore Line - are running a Railwayana Collectors' Fair. There's also loads more going on this summer, see http://www.kirkbystepheneast.co.uk/StainmoreRailway-Events.html.
Best way to get there? Via the Settle-Carlisle Line to Kirkby Stephen West: from this station it is a 15-minute walk down a very good tarmac footpath to Kirkby Stephen East. See https://d2cf7kiw5xizhy.cloudfront.net/images/timetables/bucket/leeds-to-carlisle-leeds-to-morecambe-heysham-port-2442.pdf for train times.