These jobs are probably even more stop-start than the Cotswold Line, so not sure how the 180s will like them. Modern Railways has new fleet performance figures for all types of train and Hull Trains are getting far better figures than FGW▸ ever has for the 180s, probably because of sustained high-speed running without the stress and strain of stop-start.
Just checked the timetable for those services (
http://www.northernrail.org/pdfs/timetables/20081117/20.pdf page 20 onwards)
It seems the Hazel Grove to Preston service calls at Heaton Chapel and Levenshulme, which are two stations which most services go through on the
WCML▸ between Stockport and Manchester. However, between Manchester and Preston it calls mostly at the same stations as the Manchester Airport to Blackpool North service run by Transpennine Express using 100mph 185s.
On the other hand the Manchester Victoria to Blackpool service calls at most stations except a couple of very small ones.
The reason Northern are using 180s on those routes is because they needed extra capacity and they couldn't get hold of any Sprinter units in time. I have heard is suggested that the 180s should have gone to Arriva Trains Wales with 4-5 158s or 175s going to Northern.