On the other hand, I don't think diesel pollution is so much of an issue there as it would be in cities... the area is too remote and the stations are too open to cause issues. And the argument about diesels under the wires would only be important if there was a serious plan to extend most trains beyond Oxenholme. It would be great for connectivity (though maybe not for reliability on the branch) if that was done, but unless it's going to be done, the argument for electrification is going to look a bit weak. And as it is, the journey times on the route ought to make it possible to run an hourly shuttle quite efficiently with one diesel unit. Another minor issue for me is, that I would hope that in term where we'd be to looking to provide a passing loop, perhaps between Kendal and Burneside to facilitate an increase in frequency: Is there a risk that electrification could be done in a way that makes that harder to achieve?
Also, I think there are several obvious improvements to the branch that don't involve electrification, and which may well have bigger benefits to passengers, and which I'd hate to be overlooked. Most obviously to my mind are...
- Sorting out that level crossing at Burneside.
- Clockface timetable (I'm not sure why this isn't done already when most trains are just shuttles. Is there some issue with non-clockface connections at Oxenholme?)
- Improvements to Kendal station - the entrance in particular is currently very inconveniently sited. An entrance at the Eastern end of the platform, from the A6, would make the station much easier for a lot of people to get to.
- Similarly at Windermere, a path directly to the Town Centre would make the station a lot easier to get to from much of Windermere. (At the moment, you can do it almost directly, but only if you're willing to clamber up/down a very steep and quite well hidden dirt track just below the car park - so not for the faint hearted).
- Stopping all trains at all stations. Again, I'm not sure why this isn't done already, as the time savings for skipping Burneside and Staveley must be tiny, and the result is a pretty rubbish service to both villages.
Clearly all those things could be done as well as electrification, but I wouldn't want a focus on electrification to result in those other potential improvements being forgotten about.