[umpal00mpa]

So i had an idea for UK, its not exactly SE but not sure where else to ask. If i buy something from asos or amazon and go to return it... when i go to my local royal mail 'corner shop' that takes returns.. I weigh it and scan it.. but when the guy says put it on the pile (of parcels they are collecting that day) I just walk out with it. My local royal mail point gets v busy and they just stack these boxes out of view.. I was wondering, will they check thr cameras? That is the only way this will not work. Maybe i do this whem they are especially busy?