Yeah, but difference is that Manchester-Liverpool is a somewhat important railway corridor and it is not electrified.
It is, and has been since 2015.
Electrification goes no further than Reading for those that want to go to Bristol. This, while no one can say it isn't an important corridor.
It goes as far as Didcot, and will very soon be extended to Bristol Parkway and Cardiff. In the meantime, bi-mode trains seamlessly switch over from Electric to Diesel at the push of a button at Didcot.
In the north, you can't go further than Glasgow and Edinburgh. Good luck for those needing to go to Aberdeen.
Those going to Aberdeen have it fine, using diesel trains. When LNER are able to introduce the "Azuma" trains, they will have bi-mode trains that run on Electric from London to Edinburgh, and diesel from Edinburgh to Aberdeen, whilst Scotrail are just starting to introduce their short-formed HSTs onto the route, improving the passenger experience massively.
The same way, you can't go from Manchester to Liverpool
You can, on the Electric Class 319s (mentioned above) via Chat Moss, or on diesel trains via Warrington Central.
The same way, you can't go from Manchester to Sheffield, Bradford and Leeds while they all are quite close to themselves.
You can. You just get onto a DMU, which runs perfectly fine. Manchester to Sheffield once had a second route that was wired, but it was using non-standard technology to the rest of our network (1.5kV DC OHLE). Passenger services were withdrawn along this route in 1970 (this being diverted to the Hope Valley route, which was deemed Socially important), and when the freight market started to decline the route was closed 1981. Manchester to Leeds is due to be electrified over the next 5 years, and will shortly have yet more Bi-mode trains introduced to take advantage of the wires where these exist.
One thing Electrification does not guarantee is the usage of Electric trains on the route. For example, daily on the West Coast Mainline, there are a couple of services that run from London to Glasgow/Edinburgh via Birmingham New Street. Several of these trains are formed by pairs of diesel Super Voyagers, despite running under the wires throughout (there being 2 of these pairs, as well as one single Super Voyager running the route today), so even if we did electrify everywhere, there is no guarantee of there being the Electric trains to run it (especially as most companies/factories that can build trains to Britain's restrictive loading gauge are currently working flat-out to fulfil current orders).
Think about it : while Switzerland did need electrification due to its railways going quite high, The Netherlands or France did electrify their network although they have a very, very flat country.
While you folks were electrifying, we were trying to make our railway, that was losing money hand over fist, economically viable, including the so-called "Beeching Cuts". We did not have the money at the time to go electrifying every single random route like you folks did.
I have never once said we do not need more Electrification, we need more of it, but at the same time, there is still going to be a place for Diesel and Bi-Mode trains, and that will remain for quite a while, unless we're going to start electrifying the West Highland and Far North Lines!
Anyways, this is getting off-topic now (I see a common theme starting whenever ACS is involved), so let's get this back onto Railbus' please!