Seeing that your location is "Sunderland" I am guessing the interview you are having is at Newcastle, and will therefore be with either for ServisAIR or SWISSport and not Swissair.
Baggage handlers at NCL are on about £7 an hour, but theres usually a shift bonus as well, so probably about £8 an hour in the end
Been a while since I was out on the ramp though.
RTG!