Hello chap, just replying to your message...I'd rather not go into too much detail in public (anyone can see these), but I'll happily chat further by PM (when the forum will let you) or email if you prefer! In general though, it's important to go in there well prepared, with a good understanding of what the job involves (but don't try to read the Rule Book!) and the responsibilities that go with it. Following rules and procedures, dealing with shiftwork and being able to get to work in all weather, maintaining concentration when it's quiet, working well under pressure...they're all important themes. It's a gatebox rather than a block post, which will certainly make things easier...but I'd guess that the interview will be along similar lines.