Arriva Yorkshire has a fair few:
Heckmondwike Depot: 200/1/1A & 229 all use a Mix of Wright Eclipses,Wright Gemini 2s & the odd East Lancs Lowland
Wakefield Depot: 117/195/196/174/481 all use a mix of DDs & SDs,with evening & sunday services mainly using the smaller Enviro 200s. 148/149 also use a mix of route branded East Lancs Olympus,Wright Pulsars & Wright Commanders
Selby Depot: Route 403 can see anything operate it off-peak,with East Lancs Olympus,ADL Darts,Wright Commanders or even sometimes a Wright Gemini 2 being used.
First West Yorkshire:
Leeds Routes 74/75 & 11 are mostly operated by SDs,with the odd DD thrown in (Evening & Sundays 11/11E are normally run by Enviro 400s),Route 40 also normally has some SDs mixed in with the older 04-plate Wright Geminis
Halifax routes 560 & 579 see a mix of DDs & SDs (think some boards interwork with Schools,so that could be why) Huddersfield routes 323/327 also normally see a mix of the older ALX400s & Wright Eclipses
Transdev:
Certain trips on 60 are booked to be worked with DDs,with the others using branded Optare Versas. I Think a peak time board of 662 also used to be booked a decker,but not 100% if its still the case. Route 7 can sometimes see the older Plaxton Presidents used alongside the Wright Eclipse 2s also.