StandardNoise: just to clear something up here: we absolutely do NOT keep passengers waiting on an aircraft stairs while it's refuelling! Boarding during refuelling is acceptable provided both the a/c doors are open and both sets of steps are in position, and some airlines ask for fire cover as per their own company's policy, but we DON'T keep pax waiting on the steps!!!! Whatever gave you this idea?
....Runway31 - that's Easyjet's policy at BRS as well: seatbelts not fastened if the a/c is refuelling.