The southern route via Warrington Central.
Got ya, cheers
I wouldn't imagine any changes on the Warrington route, as the routes to the east will still be un-wired. The Manchester Airport - Liverpool service was diverted away a few years ago, so there's only the half hourly stoppers, the Scarborough and the Norwich left.
I reckon the self-contained half hourly Pacer service through Warrington is sufficient justification to wire this route too (EMUs would have better acceleration and be able to get out of the paths of the "fast" trains better too), especially as both "ends" are already done - certainly better cost/benefit ratio than Newbury - Reading!
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I wondered about that, but unless they're going to electrify South TPE (Hope Valley and via Barnetby), Sheffield - Grantham via Nottingham and Ely - Norwich then there wouldn't be much point. By electrifying the northern route via Chat Moss it enables local diesel services on that line to go 100% electric.
Its a little like the Leeds - Manchester situation - the northern version is more "self contained" and therefore better to electrify than the southern "long distance" route - hence my feeling that the Bradford - Halifax route may be wired before the Huddersfield one is