The North West routes which will be electrified in a few years?
Note that I said on one of my earlier posts "when the previous government mentioned the new diesel order" i.e. before any electrification was announced. It obviously needs to be revised in view of that.
However, at present there are no plans to order new diesel carriages for TPE, so there's unlikely to be any 185 cascade. Manchester-Scotland is set to be electrified and diverted via Wigan in the next few years. This will mean 185 usage will likely return to pre-Dec 2007 diagrams before TPE got the Scottish services i.e. 170s mainly running in pairs on Manchester-Hull and more 185s for South TPE and Windermere services continuing to Manchester Airport again to fill the gap through Bolton left by the diversion of the Scottish service.
By 2019 Manchester Airport-Blackpool is likely to be switched to EMUs. No electrification has been confirmed for Barrow or Windermere. By 2019 if passenger numbers continue to grow as expected on North TPE then they'll need to be 9 car workings, meaning that the 185 fleet will be too small for TPE even after two routes are switched to EMU operation.
I've even seen a 150 being used on some Rush Hour Carmarthen/Milford Havens, originating from Manchester.
This is one of the problems we see with privatised operators. If a 175 fails it might be that ATW are left with a choice of a cancelled service or using a 150 that's spare at the Chester depot. They don't have the option of using a spare 156 from Newton Heath as they belong to a different operator.
In the past we've also seen FNW running Holyhead-Manchester using 101s or 142s to fill in for a loco-hauled set/Sprinter/175 and ATN running Manchester Airport to Cleethorphes using a 144 to fill in for a 158.
Full Wedged Two Car 175 on the Morning Rush Hour Service to Manchester....is just poor
You're just seeing the same as in other parts of Britain. Liverpool-Scarborough, Liverpool-Norwich, Manchester Airport-Edinburgh, Manchester Airport to Middlesbrough/Newcastle are all services which can be crammed to the extent where passengers are left on the platform waiting for the next service.