Watch Preserved Lines: Gloucestershire Warwickshire Railway (2010) : Full Movie Online Free Known as "the friendly line in the Cotswolds", the Gloucestershire Warwickshire Railway runs along a part of the former Great Western Railway's mainline from Birmingham to Cheltenham, via Stratford-upon-Avon. The line commands wonderful views from the sleepy hamlets and villages, as it runs through beautiful Cotswold countryside.