Can't speak for Nex but it it's based in GWY, then it should be operating the -146 for Aer Arann. I'm guessing this is some kind of wet-lease arrangement operating their flights to AMS, BOD, FAO and AGP. WAT is also in the mix, so unless they have a base there also, be prepared for W patterns.
GWY is a nice place to be based, a bit on the pricey side though but then most of ROI is if you're from the UK.