We flew from Manchester on Continental a few years back, it was a code share with Virgin, i.e. Virgin plane, staff etc, but Continental ticket.
The Virgin staff were great and offered to up grade us, as DW was heavily pregnant at the time (a babys not going to stop me getting me my Disney fix!), but when they discovered we were Continental passengers, they told us they couldn't! They were still good though, dw and myself ended up with 2 seats each, not as good as Prem Economy, but good nevertheless!!!
Ian