Normal train tickets are only refundable before the day of travel. So don't buy them in advance!
Trips (see details below): Kylesku/Scotland (6 walks) 16-23 May; Lyme Regis (4 walks) 26-29 June; Carlisle (5 walks) 30 July-04 August.
Springwood at the Hampstead Theatre on 17 July: see below