Savvy travellers in their 60s and beyond will no doubt already know they could get 1/3 off train journeys across Great Britain – but now, they can make even bigger savings with a special Senior Railcard discount. GWR has launched a brand new deal that gives Senior Railcard holders a huge 50% discount on routes across the GWR network, including Cardiff Central station and several other destinations as varied as London, the Cotswolds, Bristol and Windsor. The latest promotion means…