Series 2, episode 1 has just aired on Channel 4. I didn't realise it was on and only caught the last half-hour, but it looks like interesting viewing. Series 1 must have passed me by completely; I was hoping it would be on All4, but there's nothing but a "coming soon" page.
Scotland's Coastal Railway with Julie Walters
From North Berwick to Duirinish, Julie Walters travels beautiful Scottish coastal railways
www.channel4.com