These two are something of a mystery as I don't know anything about them and never seen any other merchandise books etc. They are part of the official Explorer 12 fleet but I don't ever remember seeing them in BHS at all. I first discovered RE1 when my Dads friend gave one he had picked up from somewhere unboxed way back in 1994. It was unboxed but the reason I knew this was part of the official range was that It came with it own little patch on the sides of the vehicle. The immediate trailer was novel as it featured an azimuthing cab in which a small figure could be placed and a winch. At the end of the winch cable was an adapter which could be clipped into the front or back of another explorer, this was to rescue Explorers that a had fallen down pits or such like.