Generation easyJet beset are allocated based on the needs of the company at the time. Say you have 10 cadets on your course, close to finishing easyJet will say that have 5x spaces at Gatwick 3x Manchester 1x Porto and 1x Newcastle for example. It's then left to your course to decide who goes where, and also I believe some weighting is given to your performance throughout the course. So you could get lucky, but I believe that Newcastle is relatively small so is not likely to come up as often. However that doesn't mean that a transfer won't be available after a short stint somewhere else, but of course the smaller regional bases would have longer waiting times.