Last week, during bad weather, my planned Thameslink train was canceled. Luckily, there were staff on hand at the station to offer advice, and I was directed to a local bus service a short walk away to continue my journey by an alternate route.
Whilst on that bus, I overhead a few other disrupted rail passengers talking. One of them mentioned having looked up this alternate route on a map online, which was news to me, and might've saved some walking / would've saved me a lot of problems had the station been un-manned!
In case of future reference, are these alternate route maps generally available online? And if so, where?