Thanks to Duncan and John aboard Patience Afloat, Open Canal Map now features railway stations near the canal. Some are missing but it gives a good overview that Google Maps sometimes misses at different zoom levels.
Here is a link to their blog about the data: http://patienceafloat.blogspot.co.uk/2016/02/railway-stations-near-canals.html
This was a bit of a shortcut – originally the plan was to cut down some data kindly given by Matthew from the fantastic website Rail Map Online – go and check it out – every railway ever built it seems! They have also recently launched a canal map showing every canal ever built – and a couple that never happened (e.g. Chroley to Preston) – here’s the link: UK and Irish Canals.
Also the layers have been cut down by merging some together – this seems to make the map load faster.